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Vehicles and equipment (Q)
    Vehicles (Qb)
         Related Term (Associative): ; 
        Ground vehicles (Qbd)
             Use For: Land vehicles
            Rolling stock (Qbdb)
            Motor vehicles (Qbdd)
                 Use For: Automotive vehicles
                Vehicle fleets (Qbddb)
                     Use For: Fleets (Vehicles); Motor vehicle fleets
                Trucks (Qbddf)
                     Use For: Cargo vehicles; Heavy goods vehicles; Lorries; Road freight vehicles
                     Related Term (Associative): ; Weigh in motion (Dmbyvw)
                    Tractor trailer combinations (Qbddfc)
                         Related Term (Associative): ; 
                        Truck tractors (Qbddfcm)
                             Use For: Tractors
                             Related Term (Associative): 
                        Trailers (Qbddfct)
                             Use For: Semitrailers
                             Related Term (Associative): 
                    Special purpose trucks (Qbddfk)
                        Delivery vehicles (Qbddfkd)
                        Industrial trucks (Qbddfkj)
                            Straddle trucks (Qbddfkjs)
                        Refrigerator trucks (Qbddfkk)
                        Tow trucks (Qbddfkp)
                        Dump trucks (Qbddfkr)
                        Tank trucks (Qbddfkt)
                             Use For: Road tankers
                        Logging trucks (Qbddfkw)
                    Trucks by motive power (Qbddfp)
                        Diesel trucks (Qbddfpd)
                        Electric trucks (Qbddfpe)
                    Trucks by number of axles (Qbddft)
                        Two axle trucks (Qbddftb)
                        Three axle trucks (Qbddftc)
                    Trucks by weight (Qbddfw)
                        Light trucks (Qbddfwc)
                            Pickup trucks (Qbddfwcf)
                        Medium trucks (Qbddfwf)
                        Heavy duty trucks (Qbddfwh)
                Passenger vehicles (Qbddh)
                    Private passenger vehicles (Qbddhm)
                        Automobiles (Qbddhmc)
                            Automobiles by type (Qbddhmcc)
                                Large automobiles (Qbddhmccb)
                                Midsize automobiles (Qbddhmccc)
                                Compact automobiles (Qbddhmccd)
                                     Use For: Small cars
                                Subcompact automobiles (Qbddhmccf)
                                Miniature automobiles (Qbddhmcch)
                                     Use For: Minicars
                                Station wagons (Qbddhmccm)
                                Sports cars (Qbddhmccs)
                                Convertibles (Automobiles) (Qbddhmcct)
                                Utility vehicles (Qbddhmccu)
                                    Sport utility vehicles (Qbddhmccus)
                                Foreign automobiles (Qbddhmccx)
                            Special purpose automobiles (Qbddhmck)
                                Automobiles for the physically disabled (Qbddhmckh)
                                     Use For: Automobiles for people with disabilities
                                Race cars (Qbddhmckr)
                                     Related Term (Associative): Racing (Ccbkxrsn)
                                Rental cars (Qbddhmckt)
                                     Related Term (Associative): Vehicle sharing (Bms)
                            Automobiles by motive power (Qbddhmcp)
                                Electric automobiles (Qbddhmcpe)
                                Gas turbine automobiles (Qbddhmcpg)
                                Hybrid automobiles (Qbddhmcph)
                                Steam automobiles (Qbddhmcps)
                        Two wheeled vehicles (Qbddhmm)
                            Mopeds (Qbddhmmm)
                            Motorcycles (Qbddhmmq)
                        Three wheeled vehicles (Qbddhmn)
                    Public passenger vehicles (Qbddhp)
                        Buses (Qbddhpb)
                             Use For: Motor coaches
                            Special purpose buses (Qbddhpbk)
                                Express buses (Qbddhpbke)
                                Feeder buses (Qbddhpbkf)
                                School buses (Qbddhpbkk)
                                Guided buses (Qbddhpbkq)
                                     Related Term (Associative): Bus rapid transit (Aetbr); Advanced vehicle control systems (Dcmvgyc); Busways (Pmrubw)
                                Shuttle buses (Qbddhpbks)
                                Transit buses (Qbddhpbkt)
                                Tour buses (Qbddhpbkv)
                                     Related Term (Associative): Bus travel (Bmbh)
                            Buses by motive power (Qbddhpbp)
                                Diesel buses (Qbddhpbpd)
                                Electric buses (Qbddhpbpe)
                                    Trolleybuses (Qbddhpbpet)
                                         Use For: Trolley buses
                                         Related Term (Associative): 
                                Natural gas buses (Qbddhpbpg)
                                     Use For: CNG powered buses; NGV powered buses
                            Buses by size (Qbddhpbw)
                                Minibuses (Qbddhpbwb)
                                     Use For: Miniature buses
                                Small buses (Qbddhpbwd)
                                Double deck buses (Qbddhpbwh)
                                Articulated buses (Qbddhpbwj)
                        Paratransit vehicles (Qbddhpp)
                            High occupancy vehicles (Qbddhpph)
                                 Use For: Multiple occupancy vehicles
                                 Related Term (Associative): Single occupant vehicles (Bkvs)
                            Jitneys (Qbddhppj)
                            Limousines (Qbddhppl)
                            Taxicabs (Qbddhppt)
                                 Use For: Cabs (Taxicabs)
                Special purpose vehicles (Qbddk)
                    All terrain vehicles (Qbddkb)
                         Use For: Offroad vehicles
                    Commercial vehicles (Qbddkc)
                    Dual mode vehicles (Qbddkd)
                    Emergency vehicles (Qbddke)
                        Fire vehicles (Qbddkef)
                        Ambulances (Qbddkem)
                             Use For: Emergency medical vehicles
                    Farm vehicles (Qbddkh)
                        Farm tractors (Qbddkht)
                    Intelligent vehicles (Qbddkj)
                         Use For: Automated vehicles; Smart cars
                         Related Term (Associative): Connected vehicles (Dtvc)
                        Autonomous vehicles (Qbddkja)
                    Low floor vehicles (Qbddkl)
                         Related Term (Associative): ; Barrier free design (Esuh); Persons with disabilities (Mm)
                    Military vehicles (Qbddkm)
                        Autonomous land vehicles (Qbddkmb)
                             Related Term (Associative): Advanced vehicle control systems (Dcmvgyc); Robotics (Ttkns)
                        Combat vehicles (Qbddkmc)
                            Tanks (Combat vehicles) (Qbddkmct)
                    Armored vehicles (Qbddkn)
                         Use For: Armoured vehicles
                    Police vehicles (Qbddkp)
                         Use For: Police cars
                    Recreational vehicles (Qbddkq)
                        Camper trucks (Qbddkqc)
                        Golf carts (Qbddkqg)
                        Travel trailers (Qbddkqt)
                             Use For: Caravans (Travel trailers)
                    Tracked vehicles (Qbddkr)
                    Towing vehicles (Qbddkt)
                    Towed vehicles (Qbddku)
                         Related Term (Associative): 
                    Snowmobiles (Qbddkw)
                         Use For: Snow vehicles
                    Test vehicles (Qbddkx)
                        Impact sleds (Qbddkxd)
                            Rocket sleds (Qbddkxdr)
                        Instrumented vehicles (Qbddkxj)
                            Experimental vehicles (Qbddkxjb)
                            Probe vehicles (Qbddkxjp)
                                 Use For: Floating cars
                                 Related Term (Associative): Floating car data (Bteaf)
                        Safety vehicles (Qbddkxs)
                             Use For: Experimental safety vehicles; Safety cars
                        Skid trailers (Qbddkxw)
                        Vans (Qbddkxy)
                    Zero emission vehicles (Qbddky)
                Vehicles by motive power (Qbddp)
                    Electric vehicles (Qbddpe)
                         Use For: Battery powered vehicles
                        Fuel cell vehicles (Qbddpef)
                             Related Term (Associative): Fuel cells (Qtpff)
                    Hybrid vehicles (Qbddph)
                         Use For: Dual fuel vehicles
                         Related Term (Associative): ; 
                        Plug-in hybrid vehicles (Qbddphp)
                    Natural gas vehicles (Qbddpn)
                    Solar powered vehicles (Qbddps)
                Vehicles by speed (Qbddv)
                    High speed vehicles (Qbddvf)
                    Slow moving vehicles (Qbddvs)
                         Related Term (Associative): 
                Vehicles by weight (Qbddw)
                    Light vehicles (Qbddwd)
                         Use For: Lightweight cars
                    Heavy vehicles (Qbddwh)
                         Related Term (Associative): 
                    Heavy duty vehicles (Qbddwk)
                         Related Term (Associative): 
            Horse drawn vehicles (Qbdf)
                 Use For: Horsecars
                 Related Term (Associative): Nonmotorized transportation (Aex); Horses (Jcbtvuuh)
            Human powered vehicles (Qbdh)
                 Related Term (Associative): Nonmotorized transportation (Aex)
                Bicycles (Qbdhb)
                     Use For: Electric bicycles
                     Related Term (Associative): ; 
                Tricycles (Qbdhc)
                Wheelchairs (Qbdhh)
                Rickshaws (Qbdhr)
                Scooters (Qbdhs)
                In-line skates (Qbdhu)
        Railroad trains (Qbf)
             Use For: Trains
             Related Term (Associative): 
            Freight trains (Qbff)
            Passenger trains (Qbfh)
            Multiple unit trains (Qbfj)
                 Use For: Trainsets
            Train components (Qbfm)
                Locomotives (Qbfmc)
                    Types of locomotives (Qbfmcc)
                        Multiple unit locomotives (Qbfmccm)
                        Slave locomotives (Qbfmccp)
                        Switching locomotives (Qbfmccs)
                    Locomotives by motive power (Qbfmcp)
                        Diesel locomotives (Qbfmcpd)
                        Diesel electric locomotives (Qbfmcpe)
                        Diesel hydraulic locomotives (Qbfmcph)
                        Electric locomotives (Qbfmcpk)
                        Gas turbine locomotives (Qbfmcpp)
                        Dual powered locomotives (Qbfmcpq)
                             Use For: Electro-diesel locomotives
                        Steam locomotives (Qbfmcps)
                Railroad cars (Qbfmk)
                    Cabooses (Qbfmkc)
                    Freight cars (Qbfmkf)
                         Use For: Goods wagons; Railway wagons
                        Covered freight cars (Qbfmkfc)
                            Automobile rack cars (Qbfmkfca)
                                 Use For: Auto carrier cars
                            Box cars (Qbfmkfcb)
                            Covered hopper cars (Qbfmkfch)
                            Refrigerator cars (Qbfmkfcr)
                            Tank cars (Qbfmkfct)
                                 Use For: Tank wagons
                        Open top cars (Qbfmkfg)
                            Container cars (Qbfmkfgc)
                            Flat cars (Qbfmkfgf)
                            Gondola cars (Qbfmkfgg)
                            Hopper cars (Qbfmkfgh)
                        Mine cars (Qbfmkfx)
                    Passenger cars (Qbfmkh)
                         Use For: Railway carriages
                        Intercity passenger cars (Qbfmkhb)
                        Commuter cars (Qbfmkhc)
                             Use For: Railroad commuter cars
                            Double deck commuter cars (Qbfmkhcd)
                        Rapid transit cars (Qbfmkhu)
                             Use For: Subway cars
                        Sleeping cars (Qbfmkhw)
                             Use For: Pullman cars
                    Rail motorcars (Qbfmkj)
                         Use For: Railroad motorcars
                    Maintenance of way cars (Qbfmkk)
                        Inspection cars (Qbfmkkt)
                             Use For: Track inspection cars
                    Multiple unit cars (Qbfmkm)
                        Diesel multiple unit cars (Qbfmkmd)
                             Use For: Diesel railroad cars
                        Electric multiple unit cars (Qbfmkme)
                    Railroad cars by type (Qbfmkt)
                        Two axle cars (Qbfmktb)
                        Four axle cars (Qbfmktd)
                        Articulated cars (Qbfmktj)
                        High capacity cars (Qbfmktk)
                        Aluminum cars (Qbfmktm)
            Trains by motive power (Qbfp)
                Electric trains (Qbfpe)
                Turbotrains (Qbfpt)
            Streetcars (Qbft)
                Cable cars (Qbftc)
                Trolley cars (Qbftt)
                     Use For: Trams
                     Related Term (Associative): 
            Special trains (Qbfx)
                Railbuses (Qbfxb)
                Tracked air cushion vehicles (Qbfxg)
                High speed rail (Qbfxh)
                     Use For: High speed trains
                Light rail vehicles (Qbfxj)
                Magnetic levitation vehicles (Qbfxm)
                     Use For: Maglev vehicles; Magnetic suspension vehicles
                Crewless trains (Qbfxv)
                Test trains (Qbfxx)
                Tilting trains (Qbfxy)
        Ships (Qbh)
             Use For: Vessels; Watercraft
             Related Term (Associative): Naval architecture (Ttkt)
            Merchant vessels (Qbhd)
                Merchant marine (Qbhdb)
                Cargo ships (Qbhdf)
                    Bulk carriers (Qbhdfb)
                        Combination carriers (Qbhdfbg)
                            Ore bulk oil carriers (Qbhdfbgo)
                                 Use For: OBO
                        Dry bulk carriers (Qbhdfbk)
                             Use For: Dry cargo ships
                            Ore carriers (Qbhdfbko)
                        Tankers (Qbhdfbm)
                             Use For: Liquid bulk carriers
                            Chemical tankers (Qbhdfbmc)
                            Oil tankers (Qbhdfbmp)
                                Supertankers (Qbhdfbmpw)
                                Very large crude carriers (Qbhdfbmpy)
                                     Use For: VLCC
                    Barge carriers (Qbhdfj)
                    Containerships (Qbhdfk)
                         Use For: Container ships
                    General cargo ships (Qbhdfm)
                    Roll on roll off ships (Qbhdfp)
                         Use For: Ro/ro ships
                    Refrigerated ships (Qbhdfr)
                    Cargo submarines (Qbhdfu)
                Passenger ships (Qbhdh)
                    Cruise ships (Qbhdhc)
                         Related Term (Associative): Cruise lines (Nbbcma)
                    Ocean liners (Qbhdhm)
                    Ferries (Qbhdht)
                         Related Term (Associative): Ferry service (Aesf); Marine transit (Aetw)
            Pleasure craft (Qbhe)
                Aquaplanes (Qbheb)
                Yachts (Qbhex)
            Feeder vessels (Qbhf)
                Offshore supply boats (Qbhfs)
            Special purpose ships (Qbhk)
                Drilling ships (Qbhkd)
                Survey vessels (Qbhkp)
                Research ships (Qbhkr)
                    Oceanographic vessels (Qbhkrm)
                Icebreakers (Qbhks)
                    Nuclear powered icebreakers (Qbhksn)
                Tugboats (Qbhkt)
                     Use For: Tugs
                    Ocean going tugs (Qbhktm)
                    Towboats (Qbhktp)
            Inland waterways vessels (Qbhn)
            Ships by ownership (Qbho)
                Government vessels (Qbhog)
                Military vessels (Qbhom)
                     Use For: Naval vessels
                    Aircraft carriers (Qbhoma)
                    Submarines (Qbhomb)
                    Cruisers (Qbhomf)
                    Frigates (Qbhomh)
                    Destroyers (Qbhomj)
                    Landing craft (Qbhomm)
            Ships by motive power (Qbhp)
                Waterjet propelled craft (Qbhpj)
                Nuclear powered ships (Qbhpn)
                Sailing ships (Qbhpw)
                     Use For: Wind powered ships
                Steamships (Qbhpy)
            Boats (Qbhs)
                Hydrofoil boats (Qbhsh)
                Hydroplanes (Qbhsj)
                     Use For: Planing craft
                Surface effect ships (Qbhss)
                Work boats (Qbhsw)
                    Heavy lift vessels (Qbhswc)
                    Fire boats (Qbhswf)
                    Fishing vessels (Qbhswh)
                    Lifeboats (Qbhswm)
                        Life rafts (Qbhswmr)
                            Inflatable life rafts (Qbhswmri)
                    Patrol boats (Qbhswp)
                    Pontoon boats (Qbhswq)
                    Supply vessels (Qbhsws)
                        Offshore support vessels (Qbhswso)
                        Tug supply vessels (Qbhswsp)
                        Tenders (Qbhswst)
            Barges (Qbht)
                LASH barges (Qbhtm)
                Pusher barges (Qbhtp)
                Tank barges (Qbhtt)
                Towed barges (Qbhtu)
            Underwater vehicles (Qbhu)
                Deep submergence vehicles (Qbhud)
                Semisubmersibles (Qbhus)
                Submersibles (Qbhuu)
            Multi hulled ships (Qbhv)
                Twin hulled ships (Qbhvt)
                    Catamarans (Qbhvtc)
                SWATH ships (Qbhvw)
            Ships by size (Qbhw)
                Full bodied ships (Qbhwb)
                Small ships (Qbhws)
                Deep draft ships (Qbhww)
                     Related Term (Associative): Deepwater harbors (Pmhbcd)
                Shallow draft ships (Qbhwx)
            High performance surface ships (Qbhx)
                High speed craft (Qbhxf)
        Aircraft (Qbk)
             Related Term (Associative): Aeronautical engineering (Ttkbb)
            Drones (Qbkd)
                 Use For: Drone aircraft; Pilotless aircraft; Unmanned aerial vehicles; Unmanned aircraft
                 Related Term (Associative): ; Unmanned aircraft systems (Dcmvbu)
                Remotely piloted aircraft (Qbkdr)
            Transport aircraft (Qbkf)
                Cargo aircraft (Qbkff)
                Jet transports (Qbkfj)
                Regional jets (Qbkfr)
                Supersonic transport planes (Qbkfs)
            Passenger aircraft (Qbkh)
                Air ambulances (Qbkha)
                     Use For: Airplane ambulances; Helicopter ambulances
                Commuter aircraft (Qbkhc)
            Utility aircraft (Qbkk)
                Training aircraft (Qbkkt)
                    Jet training planes (Qbkktj)
            Aircraft by type of lift (Qbkm)
                Airplanes (Qbkmf)
                     Use For: Fixed wing aircraft
                Tilt wing aircraft (Qbkmh)
                     Use For: Convertiplanes
                STOL aircraft (Qbkmj)
                     Use For: Short takeoff and landing aircraft
                VTOL aircraft (Qbkmk)
                     Use For: Vertical takeoff aircraft
                    Tiltrotor aircraft (Qbkmkp)
                    V/STOL aircraft (Qbkmks)
                Rotary wing aircraft (Qbkmr)
                    Helicopters (Qbkmrh)
                         Use For: Choppers (Helicopters)
                Lighter than air craft (Qbkmw)
                    Balloons (Qbkmwb)
                    Airships (Qbkmwd)
                         Use For: Blimps; Dirigibles
            Aircraft by ownership (Qbko)
                Civil aircraft (Qbkoc)
                     Use For: Commercial aircraft
                Military aircraft (Qbkom)
                    Attack aircraft (Qbkomf)
                        Jet fighters (Qbkomff)
                    Guided missiles (Qbkomk)
                         Related Term (Associative): Weapons (Qtpy)
                    Army aircraft (Qbkomm)
                    Naval aircraft (Qbkomn)
                General aviation aircraft (Qbkop)
                    Business aircraft (Qbkopc)
                         Use For: Company aircraft; Corporate owned aircraft
                    Private aircraft (Qbkopp)
                         Use For: Personal aircraft
            Aircraft by motive power (Qbkp)
                Human powered aircraft (Qbkph)
                Jet propelled aircraft (Qbkpj)
                     Use For: Jet planes
                Propeller driven aircraft (Qbkpp)
                    Turboprop aircraft (Qbkppg)
                Wind powered aircraft (Qbkpw)
            Aircraft by speed (Qbks)
                Subsonic aircraft (Qbksb)
                Supersonic aircraft (Qbksf)
                Hypersonic aircraft (Qbksh)
            Aircraft by size (Qbkw)
                Small aircraft (Qbkwf)
                     Use For: Light aircraft
                    Ultralight aircraft (Qbkwfu)
                Narrow body aircraft (Qbkwn)
                Wide body aircraft (Qbkww)
            Seaplanes (Qbky)
        Spacecraft (Qbn)
             Related Term (Associative): Commercial space transportation (Aeas)
            Artificial satellites (Qbnc)
                 Use For: Satellites
            Launch vehicles (Qbnl)
            Space shuttles (Qbns)
            Space stations (Qbnu)
        Amphibious vehicles (Qbq)
            Air cushion vehicles (Qbqg)
                 Use For: Ground effect machines; Hovercraft
        Used cars (Qbu)
             Use For: Pre-owned cars; Pre-owned vehicles; Used vehicles
    Vehicle characteristics (Qc)
         Related Term (Associative): Vehicle operations (Br)
        Vehicle capacity (Qcc)
        Vehicle fitness (Qcf)
            Airworthiness (Qcfd)
            Crashworthiness (Qcfm)
                 Related Term (Associative): Impact tests (Gbgn)
            Driveability (Qcfp)
            Seaworthiness (Qcfs)
        Handling characteristics (Qch)
            Turning radius (Qcht)
        Vehicle length (Qcl)
             Related Term (Associative): 
        Maneuverability (Qcm)
             Use For: Manoeuvrability
        Vehicle performance (Qcp)
            Braking performance (Qcpb)
                 Use For: Brake efficiency; Vehicle stopping time
            Drawbar pull (Qcpd)
            Horsepower (Qcph)
            Range (Vehicles) (Qcpr)
                 Use For: Mileage range
                 Related Term (Associative): 
            Riding qualities (Qcpt)
        Vehicle size (Qcs)
             Related Term (Associative): ; Oversize loads (Bragm); Size and weight regulations (Crftp)
            Metacentric height (Qcsm)
            Wheel base (Qcsw)
        Vehicle weight (Qcw)
             Related Term (Associative): Overweight loads (Brago); Size and weight regulations (Crftp)
            Gross weight (Qcwg)
                Gross vehicle weight (Qcwgg)
            Unsprung weight (Qcwu)
    Vehicle dynamics (Qd)
         Related Term (Associative): Vehicle operations (Br)
        Flight (Qdb)
             Related Term (Associative): ; Aeronautics (Tpxsfb)
            Flight characteristics (Qdbc)
                Angle of attack (Qdbca)
                Airspeed (Qdbcb)
                Ground speed (Qdbcg)
                    Wind factor (Air navigation) (Qdbcgw)
                Flight time (Qdbct)
                     Related Term (Associative): On time performance (Bbjkm)
            Flight dynamics (Qdbd)
                Aerodynamic lift (Qdbdb)
                    Lift drag ratio (Qdbdbm)
                Aerodynamic stability (Qdbde)
                    Directional stability (Qdbdeh)
                    Dynamic stability (Qdbdeq)
                Attitude (Flight dynamics) (Qdbdf)
                Downwash (Qdbdh)
                Flutter (Aeronautics) (Qdbdj)
                     Use For: Bridge flutter
                     Related Term (Associative): Aeroelasticity (Smbkb)
                Ground effect (Qdbdk)
                Pitch (Dynamics) (Qdbdn)
                    Pitching moment (Qdbdnm)
                Stall (Qdbdr)
                Thrust (Qdbdt)
                    Blade loading (Qdbdtb)
                Trim (Aeronautics) (Qdbdu)
                Wing loading (Qdbdw)
                Yaw (Qdbdx)
            Flight paths (Qdbp)
                Approach (Qdbpb)
                Climbing flight (Qdbpf)
                Cruising flight (Qdbpk)
                Descent (Qdbpp)
        Motor vehicle dynamics (Qdm)
             Related Term (Associative): Rollover crashes (Hbbgtat)
            Axle loads (Qdmb)
                 Related Term (Associative): 
                Tandem axle loads (Qdmbt)
                Wheel loads (Qdmbw)
            Offtracking (Qdmp)
            Skidding (Qdms)
            Tire mechanics (Qdmt)
                Tire pressure (Qdmtp)
                     Related Term (Associative): ; 
                Tire forces (Qdmtt)
            Trailer swing (Qdmv)
            Wheel slip (Qdmx)
        Train track dynamics (Qdr)
             Related Term (Associative): Rolling contact (Smdr)
            Hunting (Dynamics) (Qdrh)
            L/V ratio (Qdrm)
            Rocking (Qdrr)
        Ship motion (Qds)
             Use For: Ship dynamics
            Dynamic stability (Qdsb)
            Heaving (Ship motion) (Qdsd)
            Heeling (Qdsg)
            Pitch (Dynamics) (Qdsj)
                Pitching moment (Qdsjp)
            Rolling (Qdsm)
            Slamming (Qdsp)
            Surging (Qdsq)
            Swaying (Qdst)
            Yaw (Qdsy)
    Vehicle components (Qp)
         Related Term (Associative): 
        Vehicle bodies (Qpb)
             Related Term (Associative): 
            Vehicle body parts (Qpba)
                Vehicle front end (Qpbac)
                    Bows (Qpbacb)
                Vehicle interiors (Qpbai)
                     Related Term (Associative): 
                Vehicle rear end (Qpbam)
                    Sterns (Qpbams)
                    Tails (Aircraft) (Qpbamt)
                Vehicle sides (Qpbas)
                    Nearside (Qpbasn)
                         Related Term (Associative): 
                    Offside (Qpbaso)
                         Related Term (Associative): 
                    Port side (Qpbasp)
                    Starboard side (Qpbass)
                Underbodies (Qpbau)
                    Bilges (Qpbaub)
                    Double bottoms (Qpbaud)
                Vehicle roofs (Qpbax)
            Bodies of specific vehicles (Qpbb)
                Airframes (Qpbbb)
                    Airfoils (Qpbbbk)
                         Use For: Aerofoils
                        Elevators (Airplanes) (Qpbbbkd)
                        Fins (Aircraft) (Qpbbbkf)
                        Leading edges (Qpbbbkm)
                        Trailing edges (Qpbbbkt)
                        Wings (Aircraft) (Qpbbbkw)
                    Fuselages (Qpbbbr)
                Bluff bodies (Qpbbd)
                Motor vehicle bodies (Qpbbm)
                Ship bodies (Qpbbs)
                    Hulls (Qpbbsh)
                        Planing hulls (Qpbbshp)
                    Hydrofoils (Qpbbsm)
                        Supercavitating hydrofoils (Qpbbsms)
            Vehicle body components (Qpbc)
                Bumpers (Qpbcb)
                Doors (Vehicles) (Qpbcd)
                     Related Term (Associative): 
                    Hatch covers (Qpbcdh)
                Door latches (Qpbce)
                     Use For: Door locks
                     Related Term (Associative): ; Locks (Fasteners) (Rbmnki)
                Door handles (Qpbcf)
                Hoods (Qpbch)
                     Use For: Bonnets
                Aerodynamic features (Vehicle body components) (Qpbcj)
                    Fairings (Qpbcjf)
                    Spoilers (Qpbcjs)
                Fenders (Qpbcn)
                Trunks (Vehicles) (Qpbct)
                Underride guards (Qpbcu)
                Windows (Vehicles) (Qpbcw)
                    Side windows (Qpbcws)
                    Windshields (Qpbcwx)
                         Use For: Windscreens
        Vehicle compartments (Qpe)
            Crew compartments (Qpec)
                Bridges (Ships) (Qpecb)
                     Use For: Ship bridges
                Cabs (Vehicle compartments) (Qpecc)
                     Use For: Locomotive cabs; Truck cabs
                Flight decks (Qpecf)
                    Cockpits (Qpecfc)
            Passenger compartments (Qpep)
                Aircraft cabins (Qpepb)
            Cargo compartments (Qpes)
                 Related Term (Associative): Stowage (Brah)
                Holds (Vehicles) (Qpesh)
                     Use For: Cargo holds
            Engine compartments (Qpeu)
                Nacelles (Qpeun)
            Vehicle compartment components (Qpey)
                Instrument panels (Qpeyj)
                     Use For: Dashboards
                     Related Term (Associative): ; Navigation devices (Dcnsp); Indicating instruments (Guk)
                    Indicators (Instruments) (Qpeyjj)
                Pedals (Qpeyp)
                Seats (Qpeys)
                     Use For: Seating
                    Types of seats (Qpeysb)
                        Ejection seats (Qpeysbe)
                        Front seats (Qpeysbf)
                        Rear seats (Qpeysbr)
                    Parts of seats (Qpeysy)
                        Seat backs (Qpeysyb)
                        Headrests (Qpeysyh)
        Vehicle frames (Qpg)
            Chassis (Qpgc)
            Structural components of specific vehicles (Qpgy)
                Aircraft structural components (Qpgyb)
                    Ribs (Aircraft) (Qpgybb)
                Railcar structural components (Qpgyr)
                    Car trucks (Railroads) (Qpgyrt)
                         Use For: Bogies; Railroad car trucks; Trucks (Railroad car structures)
                    Wheelsets (Railroads) (Qpgyrw)
                        Car wheels (Railroads) (Qpgyrwr)
                             Use For: Railroad car wheels
                             Related Term (Associative): Wheels (Qpmw); Rolling contact (Smdr)
                Ship structural components (Qpgys)
                    Bulkheads (Ships) (Qpgysb)
                    Decks (Ships) (Qpgysd)
                         Use For: Ship decks
                    Deckhouses (Qpgyse)
                    Keels (Qpgysk)
                    Plating (Ships) (Qpgysp)
                    Skegs (Qpgyss)
                    Stems (Ships) (Qpgyst)
        Vehicle push devices (Qph)
            Axles (Qphb)
                 Related Term (Associative): 
            Driving wheels (Qphd)
            Propellers (Qphp)
                 Use For: Air screws
                Types of propellers (Qphpb)
                    Contrarotating propellers (Qphpbb)
                    Controllable pitch propellers (Qphpbd)
                    Cycloidal propellers (Qphpbg)
                    Ducted propellers (Qphpbj)
                    Screw propellers (Qphpbn)
                    Shrouded propellers (Qphpbp)
                    Steerable propellers (Qphpbr)
                    Supercavitating propellers (Qphpbs)
                    Variable pitch propellers (Qphpbv)
                Propeller components (Qphpy)
                    Propeller blades (Qphpyb)
                    Propeller shafts (Qphpys)
            Rotors (Qphr)
                 Use For: Helicopter rotors; Impellers
                Rotor blades (Qphrb)
        Suspension systems (Qpi)
             Related Term (Associative): Traction control (Dcmvgt)
            Active suspension systems (Qpib)
                 Use For: Active automotive suspensions
            Air suspension systems (Qpid)
            Front suspension systems (Qpif)
            Rear suspension systems (Qpih)
            Magnetic levitation (Qpim)
                 Use For: Electromagnetic suspension; Magnetic suspension
            Suspension system components (Qpiy)
                Ballast (Ships) (Qpiyb)
                     Use For: Ballast water
                Ballast tanks (Qpiyc)
                Pylons (Qpiyg)
                Shock absorbers (Qpiyn)
                Snubbers (Qpiyp)
                Springs (Vehicles) (Qpiyr)
                    Air springs (Qpiyrd)
                Stabilizers (Qpiyt)
        Steering systems (Qpj)
             Related Term (Associative): Automatic steering control (Dcmvgych)
            Four wheel steering (Qpjf)
            Power steering (Qpjp)
            Steering components (Qpjy)
                Ailerons (Qpjyb)
                Flaps (Aircraft) (Qpjyf)
                Flaperons (Qpjyg)
                Handlebars (Qpjyh)
                Rudders (Qpjyq)
                Sails (Qpjyr)
                Steering columns (Qpjys)
                Steering gears (Qpjyt)
                Steering wheels (Qpjyu)
                     Related Term (Associative): ; 
                Thrusters (Qpjyw)
                    Bow thrusters (Qpjywb)
        Brakes (Qpk)
             Related Term (Associative): Automatic braking (Dcmvgmb)
            Types of brakes (Qpkb)
                Air brakes (Qpkbc)
                Antilock brake systems (Qpkbe)
                     Use For: ABS; Antiskid brakes
                Disc brakes (Qpkbj)
                     Use For: Disk brakes
                Eddy current brakes (Qpkbm)
                Electric brakes (Qpkbp)
                Friction brakes (Qpkbr)
                Hydraulic brakes (Qpkbt)
                Power brakes (Qpkbw)
                Auxiliary brakes (Qpkbx)
                    Emergency brakes (Qpkbxe)
                    Parking brakes (Qpkbxp)
            Brake components (Qpky)
                Brake discs (Qpkyb)
                Brake drums (Qpkyd)
                Brake fluids (Qpkyf)
                Brake linings (Qpkyk)
                Brake lines (Qpkym)
                Brake pads (Qpkyp)
                Brake pedals (Qpkyr)
                Brake shoes (Qpkys)
        Tires and wheels (Qpm)
            Tires (Qpmt)
                 Use For: Rubber tires; Tyres
                 Related Term (Associative): ; ; Tire/pavement noise (Jfnbtt)
                Types of tires (Qpmtb)
                    Types of tires by ply (Qpmtbp)
                        Belted tires (Qpmtbpb)
                        Bias ply tires (Qpmtbpe)
                             Use For: Cross ply tires
                        Radial ply tires (Qpmtbpr)
                    Retreaded tires (Qpmtbr)
                    Snow tires (Qpmtbs)
                    Studded tires (Qpmtbt)
                Tire components (Qpmty)
                    Tire cords (Qpmtyc)
                    Tire sidewalls (Qpmtyq)
                    Tire studs (Qpmtys)
                    Tire treads (Qpmtyt)
                         Use For: Treads
                         Related Term (Associative): 
            Wheels (Qpmw)
                 Related Term (Associative): Car wheels (Railroads) (Qpgyrwr)
                Wheel rims (Qpmwr)
            Landing gear (Qpmy)
                Skids (Qpmys)
                Undercarriages (Qpmyu)
        Fuel systems (Qpn)
            Carburetion (Qpnc)
            Fuel injection (Qpnf)
                Air injection systems (Qpnfb)
                Electronic fuel injection (Qpnfe)
            Fuel system components (Qpny)
                Carburetors (Qpnyc)
                     Use For: Carburettors
                Fuel regulating devices (Qpnyf)
                    Accelerators (Devices) (Qpnyfb)
                         Related Term (Associative): 
                    Chokes (Qpnyfc)
                    Cruise control (Qpnyff)
                         Related Term (Associative): Autonomous intelligent cruise control (Dcmvgycj)
                    Throttles (Qpnyft)
                Fuel storage and delivery devices (Qpnyn)
                    Fuel filters (Qpnynf)
                    Fuel injectors (Qpnynj)
                    Fuel pumps (Qpnynp)
                    Fuel tanks (Qpnynt)
                    Intake valves (Qpnynv)
        Power trains (Qpo)
             Use For: Drivetrains; Powertrains
            Vehicle drive systems (Qpob)
                 Use For: Drive systems; Drives
                Four wheel drive (Qpobb)
                Front wheel drive (Qpobf)
                Rear wheel drive (Qpobr)
                Electric drives (Qpobw)
            Power train components (Qpox)
                Clutches (Qpoxc)
                Drivelines (Qpoxd)
                    Drive shafts (Qpoxdd)
                    Universal joints (Qpoxdu)
                Gears (Qpoxg)
                    Differentials (Gears) (Qpoxgd)
                    Epicyclic gears (Qpoxge)
                    Planetary gear trains (Qpoxgp)
                    Reduction gears (Qpoxgs)
                    Gear components (Qpoxgy)
                        Gearshifts (Qpoxgys)
                        Gear teeth (Qpoxgyt)
                Transmissions (Qpoxt)
                     Use For: Gearboxes
                    Automatic transmissions (Qpoxtb)
                    Continuously variable transmissions (Qpoxtc)
                    Hydraulic transmissions (Qpoxth)
                    Manual transmissions (Qpoxtm)
                         Use For: Mechanical transmissions
        Vehicle power plants (Qpp)
             Use For: Vehicle engines
            Auxiliary power units (Qppb)
        Occupant protection devices (Qpq)
             Related Term (Associative): Vehicle safety (Haav)
            Restraint systems (Qpqr)
                 Related Term (Associative): 
                Attachment hardware (Qpqra)
                Manual safety belts (Qpqrm)
                     Use For: Safety belts
                    Knee restraints (Qpqrmk)
                    Seat belts (Qpqrmp)
                         Use For: Seatbelts
                        Seat belt use (Qpqrmpu)
                             Use For: Seat belt usage; Seatbelt usage; Seatbelt use
                    Shoulder harnesses (Qpqrmt)
                         Use For: Safety harnesses
                    Three point restraint systems (Qpqrmu)
                Passive restraint systems (Qpqrp)
                    Air bags (Qpqrpb)
                         Use For: Air bag restraint systems; Airbags
                         Related Term (Associative): Crash sensors (Dmgume)
                        Side air bags (Qpqrpbs)
                             Related Term (Associative): Side crashes (Hbbgts)
                    Automatic seat belts (Qpqrpd)
                    Deployable head restraints (Qpqrpp)
                         Related Term (Associative): 
                Child restraint systems (Qpqry)
                     Use For: Car seats; Child car seats; Child safety seats
                     Related Term (Associative): Children (Mbc)
                    Booster seats (Qpqryb)
                    Forward facing restraint systems (Qpqryf)
                    Rear facing restraint systems (Qpqryr)
            Roll bars (Qpqt)
            Vehicle padding (Qpqv)
                 Related Term (Associative): 
        Vehicle electrical systems (Qpu)
             Related Term (Associative): Engine electrical components (Qtbmbere); Electric batteries (Qtpfb)
                Horns (Qpuhh)
                Sirens (Qpuhs)
            Vehicle lighting (Qpum)
                 Related Term (Associative): ; Lighting equipment (Qtpn)
                Vehicle lighting systems (Qpumb)
                    Interior lighting (Qpumbj)
                    Rear lighting (Qpumbr)
                    Side lighting (Qpumbs)
                Vehicle lighting devices (Qpumx)
                    Brake lamps (Qpumxb)
                         Use For: Brake lights
                        High mounted brake lamps (Qpumxbh)
                    Daytime running lamps (Qpumxd)
                         Use For: Daytime running lights
                    Headlamps (Qpumxh)
                         Use For: Headlights
                         Related Term (Associative): 
                        Fog lamps (Qpumxhf)
                        High beamed headlamps (Qpumxhh)
                             Related Term (Associative): 
                        Low beamed headlamps (Qpumxhm)
                             Related Term (Associative): 
                    Taillamps (Qpumxs)
                         Use For: Taillights
                    Turn signals (Qpumxt)
            Pantographs (Qpup)
        Vehicle electronics (Qpv)
             Use For: Automotive electronics; On board electronics
             Related Term (Associative): ; Automated vehicle control (Dcmv); Motor vehicle navigational aids (Dcnsyh); In vehicle sensors (Dmgum); Telematics (Dt); Electronic equipment (Qtbe); Automotive computers (Qtpxmbv)
        Emission control systems (Qpw)
             Related Term (Associative): Pollutants (Jfgs); Pollution control (Jfgy)
            Exhaust gas recirculation (Qpwe)
                 Related Term (Associative): Exhaust gases (Jfgsge); Fuel consumption (Jnruef); Nitrogen oxides (Rbcgnru)
            Positive crankcase ventilation systems (Qpwp)
            Selective catalytic reduction (Qpws)
                 Related Term (Associative): Exhaust gases (Jfgsge); Fuel consumption (Jnruef); Nitrogen oxides (Rbcgnru)
            Exhaust system components (Qpwx)
                Air injection reactors (Qpwxb)
                Exhaust manifolds (Qpwxe)
                Exhaust pipes (Qpwxf)
                Mufflers (Qpwxm)
            Emission control devices (Qpwy)
                Afterburners (Qpwyb)
                Catalytic converters (Qpwyc)
        Vehicle accessories (Qpy)
            Antitheft devices (Qpyb)
            Event data recorders (Qpye)
                 Related Term (Associative): ; Flight recorders (Dcnspf); Voyage data recorders (Dcnsysv); Automatic crash notification (Dsfpcb)
            License plates (Qpym)
                 Use For: Number plates
            Splash guard (Qpys)
            Tire chains (Qpyt)
            Vehicle identification numbers (Qpyu)
            Vehicle viewing aids (Qpyv)
                Periscopes (Qpyvp)
                Rearview mirrors (Qpyvr)
            Windshield wipers (Qpyw)
            Windshield washers (Qpyx)
    Equipment (Qt)
         Use For: Apparatus; Devices
         Related Term (Associative): Control devices (Dcj); Communication devices (Dsg); Testing equipment (Gu); Structural parts (Pbp); Building materials (Rbm)
        Types of equipment (Qtb)
            Acoustic equipment (Qtba)
                Acoustic generators (Qtbab)
                    Electroacoustic transducers (Qtbabe)
                Amplifiers (Qtbad)
                In vehicle annunciators (Qtbag)
                     Use For: Annunciators in vehicles
                Microphones (Qtbam)
                Public address systems (Qtbap)
                Tape recorders (Qtbat)
            Electrical equipment (Qtbc)
                 Use For: Electric devices; Electric equipment
                 Related Term (Associative): Electrical installation (Fcap); Coaxial cables (Qtbfb); Motors (Qtbmbm); Electricity (Se)
                Battery chargers (Qtbcb)
                Brushes (Electricity) (Qtbcc)
                Buses (Electricity) (Qtbcd)
                Capacitors (Qtbce)
                Circuit breakers (Qtbcf)
                    Choppers (Electricity) (Qtbcfc)
                Converters (Electricity) (Qtbcg)
                    Frequency converters (Qtbcgf)
                    Static converters (Qtbcgq)
                    Synchronous converters (Qtbcgs)
                Electric cables (Qtbch)
                Electric circuits (Qtbci)
                     Use For: Circuits (Electricity)
                    Rectifiers (Qtbcin)
                    Regenerators (Qtbcir)
                    Thermistors (Qtbcit)
                Electric controllers (Qtbcj)
                Electric generators (Qtbck)
                    Homopolar generators (Qtbckh)
                Electrodes (Qtbcm)
                    Electrolytic cells (Qtbcme)
                Insulators (Electricity) (Qtbcn)
                Inverters (Qtbcp)
                Modules (Electricity) (Qtbcq)
                Relays (Electricity) (Qtbcr)
                Resistors (Qtbcs)
                Sleeves (Electricity) (Qtbct)
                     Use For: Bushings
                Sockets (Electricity) (Qtbcu)
                Stators (Qtbcv)
                Switches (Electricity) (Qtbcw)
                    Flashers (Qtbcwf)
                    Spark gaps (Qtbcws)
                Vibrators (Electricity) (Qtbcx)
                Voltage regulators (Qtbcy)
            Electronic equipment (Qtbe)
                 Related Term (Associative): Electronic control (Dcge); Control devices (Dcj); Vehicle electronics (Qpv); Computers (Qtpxm)
                Analog to digital converters (Qtbea)
                Charge coupled devices (Qtbeb)
                     Related Term (Associative): Digital cameras (Qtprcf)
                Cryogenic devices (Qtbec)
                     Use For: Superconducting devices
                Dampers (Electronics) (Qtbed)
                Diodes (Qtbee)
                    Light emitting diodes (Qtbeem)
                         Use For: LEDs
                Electron tubes (Qtbef)
                    Cathode ray tubes (Qtbefc)
                    Vacuum tubes (Qtbefv)
                Electronic components (Qtbeh)
                Electronic controllers (Qtbei)
                     Use For: Controllers (Electronic equipment)
                     Related Term (Associative): Traffic signal controllers (Dcmthrrc)
                    PID controllers (Qtbeip)
                         Use For: Proportional integral differential controllers; Three term controllers
                Integrated circuits (Qtbej)
                    Microwave integrated circuits (Qtbejm)
                         Use For: MMIC
                Microwave devices (Qtbem)
                Millimeter wave devices (Qtbeo)
                Pulse generators (Qtbep)
                Semiconductor devices (Qtbeq)
                    CMOS devices (Qtbeqc)
                         Use For: Complementary metal oxide semiconductor devices
                Solid state devices (Qtbes)
                Transistors (Qtbet)
            Electromagnetic devices (Qtbf)
                 Related Term (Associative): Electromagnetism (Sf)
                Coaxial cables (Qtbfb)
                     Related Term (Associative): Electrical equipment (Qtbc)
                Coils (Electromagnetism) (Qtbfd)
                     Use For: Electric coils
                Commutators (Qtbff)
                Magnets (Qtbfm)
                    Electromagnets (Qtbfme)
                        Superconducting magnets (Qtbfmes)
                    Permanent magnets (Qtbfmp)
                Photocells (Qtbfp)
                     Use For: Photoelectric cells
                Solenoids (Qtbfs)
                Transformers (Qtbfu)
                    Autotransformers (Qtbfuc)
                Waveguides (Qtbfw)
            Hydraulic equipment (Qtbh)
                Deflectors (Qtbhd)
                Electrohydraulic mechanisms (Qtbhe)
            Machines (Qtbm)
                Types of machines (Qtbmb)
                     Related Term (Associative): Equipment by end use (Qtp)
                    Auxiliary power plants (Qtbmbb)
                    Compressors (Qtbmbc)
                        Air compressors (Qtbmbcb)
                    Engines (Qtbmbe)
                        Types of engines (Qtbmbeb)
                            Air engines (Qtbmbebb)
                            Engines by cycle (Qtbmbebd)
                                Two stroke cycle engines (Qtbmbebdb)
                                Four stroke cycle engines (Qtbmbebdf)
                            External combustion engines (Qtbmbebe)
                                Rankine engines (Qtbmbebem)
                                     Use For: Rankine cycle engines
                                Steam engines (Qtbmbebes)
                                Stirling engines (Qtbmbebeu)
                            Heat engines (Qtbmbebh)
                            Internal combustion engines (Qtbmbebj)
                                Compression ignition engines (Qtbmbebjb)
                                Diesel engines (Qtbmbebjd)
                                    Marine diesel engines (Qtbmbebjdm)
                                Gasoline engines (Qtbmbebjg)
                                Otto cycle engines (Qtbmbebjn)
                                Piston engines (Qtbmbebjp)
                                     Use For: Reciprocating engines
                                Rotary engines (Qtbmbebjr)
                                Spark ignition engines (Qtbmbebjs)
                                Stratified charge engines (Qtbmbebjt)
                                Wankel engines (Qtbmbebjw)
                                     Use For: Rotary combustion engines
                            Jet engines (Qtbmbebk)
                                Pulsejet engines (Qtbmbebkp)
                                Ramjet engines (Qtbmbebkr)
                            Turbine engines (Qtbmbebt)
                                Turbofan engines (Qtbmbebtf)
                                    Lift fans (Qtbmbebtfm)
                                Turbojet engines (Qtbmbebtj)
                                Turboprop engines (Qtbmbebtp)
                        Engine components (Qtbmber)
                             Use For: Engine parts
                            Engine cooling systems (Qtbmberc)
                                Engine air cooling systems (Qtbmbercb)
                                    Fans (Qtbmbercbf)
                                    Fan belts (Qtbmbercbg)
                                Engine water cooling systems (Qtbmbercw)
                                    Radiators (Qtbmbercwr)
                                        Radiator caps (Qtbmbercwrc)
                                    Water pumps (Qtbmbercww)
                            Engine electrical components (Qtbmbere)
                                 Related Term (Associative): Vehicle electrical systems (Qpu)
                                Alternators (Qtbmbereb)
                                Condensers (Qtbmberec)
                                Distributors (Engines) (Qtbmberef)
                                Engine regulators (Qtbmbereg)
                                Engine starters (Qtbmberej)
                                Generators (Qtbmberen)
                                Ignition systems (Qtbmbereq)
                                    Ignition coils (Qtbmbereqj)
                                    Alcohol ignition interlock devices (Qtbmbereqr)
                                         Use For: Alcolocks
                                         Related Term (Associative): Drunk driving (Hmdsedd)
                                    Ignition seat belt interlocks (Qtbmbereqs)
                                    Spark plugs (Qtbmberequ)
                            Engine lubrication devices (Qtbmberk)
                                Oil filters (Qtbmberkp)
                                Oil pumps (Qtbmberkr)
                            Engine mechanical components (Qtbmberm)
                                Cams (Qtbmbermb)
                                Camshafts (Qtbmbermd)
                                Combustors (Qtbmbermf)
                                    Combustion chambers (Qtbmbermfc)
                                Connecting rods (Qtbmbermg)
                                Crankcases (Qtbmbermh)
                                Crankshafts (Qtbmbermj)
                                Engine bearings (Qtbmbermm)
                                     Related Term (Associative): Bearings (Qtbmyd)
                                Engine cylinders (Qtbmbermn)
                                    Cylinder blocks (Qtbmbermnb)
                                         Use For: Engine blocks
                                    Cylinder heads (Qtbmbermnh)
                                Engine mounts (Qtbmbermp)
                                Flywheels (Qtbmbermr)
                                Manifolds (Qtbmbermt)
                                Pistons (Engines) (Qtbmbermv)
                                    Piston rings (Qtbmbermvr)
                                Superchargers (Qtbmbermw)
                                    Turbochargers (Qtbmbermwx)
                                Thrust reversers (Qtbmbermx)
                                Valves (Qtbmbermy)
                                    Exhaust valves (Qtbmbermye)
                        Engine operation (Qtbmbex)
                            Engine balance (Qtbmbexd)
                            Engine cycle (Qtbmbexg)
                            Engine displacement (Qtbmbexm)
                            Engine efficiency (Qtbmbexp)
                            Engine idling (Qtbmbexr)
                            Engine knock (Qtbmbexs)
                            Engine performance (Qtbmbexv)
                    Motors (Qtbmbm)
                         Use For: Electric motors
                         Related Term (Associative): Electrical equipment (Qtbc)
                        Alternating current motors (Qtbmbmb)
                             Use For: AC motors
                        Direct current motors (Qtbmbmd)
                             Use For: DC motors
                        Induction motors (Qtbmbmj)
                        Linear motors (Qtbmbmm)
                            Linear induction motors (Qtbmbmmm)
                        Reversible motors (Qtbmbmp)
                        Synchronous motors (Qtbmbms)
                        Asynchronous motors (Qtbmbmt)
                        Three phase motors (Qtbmbmw)
                    Pumps (Qtbmbp)
                        Centrifugal pumps (Qtbmbpc)
                        Fuel pumps (Qtbmbpf)
                        Jet pumps (Qtbmbpj)
                            Ejectors (Qtbmbpje)
                        Mud pumps (Qtbmbpm)
                        Oil pumps (Qtbmbpp)
                        Suction pumps (Qtbmbps)
                        Sump pumps (Qtbmbpu)
                        Waterjets (Qtbmbpw)
                             Use For: Marine jets
                    Turbines (Qtbmbt)
                        Gas turbines (Qtbmbtg)
                        Hydraulic turbines (Qtbmbtk)
                        Steam turbines (Qtbmbtm)
                Machinery (Qtbmy)
                    Bearings (Qtbmyd)
                         Related Term (Associative): Bridge bearings (Pdybbfe); Engine bearings (Qtbmbermm)
                        Antifriction bearings (Qtbmyda)
                        Gas bearings (Qtbmydg)
                        Journal bearings (Qtbmydj)
                            Journal boxes (Qtbmydjb)
                                 Related Term (Associative): Hot box detectors (Dmgdri)
                        Shaft bearings (Qtbmyds)
                            Roller bearings (Qtbmydsr)
                        Thrust bearings (Qtbmydt)
                    Blades (Machinery) (Qtbmyh)
                        Vanes (Machinery) (Qtbmyhv)
                    Fittings (Qtbmyj)
                    Governors (Devices) (Qtbmym)
                    Shafts (Machinery) (Qtbmyq)
                        Cardan shafts (Qtbmyqc)
                    Torque converters (Qtbmyt)
                    Valves (Qtbmyx)
                        Dampers (Qtbmyxd)
                        Pressure relief valves (Qtbmyxp)
                             Use For: Relief valves
                        Safety valves (Qtbmyxv)
            Nuclear reactors (Qtbn)
                Types of nuclear reactors (Qtbnb)
                    Thermal reactors (Qtbnbt)
                    Water cooled reactors (Qtbnbw)
                Nuclear reactor components (Qtbnp)
                    Nuclear reactor cores (Qtbnpc)
                    Fuel elements (Qtbnpf)
                         Use For: Nuclear fuel elements
            Optical devices (Qtbp)
                Lasers (Qtbpm)
                Lenses (Optics) (Qtbpp)
                    Contact lenses (Qtbppc)
                    Eyeglasses (Qtbppe)
                Mirrors (Qtbps)
                    Convex mirrors (Qtbpsc)
                    Plane mirrors (Qtbpsp)
                Night vision devices (Qtbpt)
                     Related Term (Associative): Night vision (Mxbvn)
                Optical systems (Qtbpu)
            Pneumatic equipment (Qtbr)
            Portable equipment (Qtbs)
        Equipment by end use (Qtp)
             Related Term (Associative): Types of machines (Qtbmb)
            Agricultural equipment (Qtpa)
                Plows (Agriculture) (Qtpap)
            Construction and maintenance equipment (Qtpb)
                Construction equipment (Qtpbc)
                     Use For: Construction machinery
                    Compactors (Qtpbcb)
                        Rollers (Qtpbcbr)
                            Road rollers (Qtpbcbrr)
                                Tandem rollers (Qtpbcbrrt)
                            Sheepsfoot rollers (Qtpbcbrs)
                    Crushers (Qtpbce)
                    Drilling machines (Qtpbcg)
                        Cable systems (Qtpbcgc)
                    Excavating equipment (Qtpbcj)
                        Backhoes (Qtpbcjb)
                        Crawler tractors (Qtpbcjc)
                            Bulldozers (Qtpbcjcb)
                        Draglines (Qtpbcjf)
                        Dredges (Qtpbcjm)
                    Graders (Qtpbck)
                    Mixers (Qtpbcm)
                         Use For: Mixing equipment
                        Concrete mixers (Qtpbcmc)
                        Pug mills (Qtpbcmp)
                    Pile hammers (Qtpbcp)
                         Use For: Drop hammers
                    Roadbuilding machinery (Qtpbcr)
                         Use For: Road machinery
                        Pavers (Qtpbcrp)
                             Use For: Paving machines
                            Slip form pavers (Qtpbcrps)
                        Road rollers (Qtpbcrr)
                        Screeds (Qtpbcrs)
                    Spreaders (Qtpbcs)
                    Tunneling machines (Qtpbct)
                        Tunnel borers (Qtpbctb)
                             Use For: Tunnel boring machines
                    Vibratory equipment (Qtpbcv)
                Maintenance equipment (Qtpbm)
                    Snowblowers (Qtpbmb)
                         Use For: Snow blowers
                    Deicers (Equipment) (Qtpbmd)
                    Mowers (Qtpbmm)
                    Shadow vehicles (Qtpbmq)
                         Related Term (Associative): Work zone safety (Haathw)
                    Snowplows (Qtpbms)
                         Use For: Snow ploughs; Snow plows
            Cleaning equipment (Qtpe)
                Air cleaners (Qtped)
                    Air filters (Qtpedb)
                    Cyclone separators (Qtpedc)
                    Dust filters (Qtpedd)
                    Electrostatic precipitators (Qtpede)
                    Scrubbers (Qtpeds)
                Oil recovery equipment (Qtpep)
                    Oil booms (Qtpepp)
                Sweepers (Qtpes)
                Vacuum cleaners (Qtpev)
            Energy storage devices (Qtpf)
                Electric batteries (Qtpfb)
                     Use For: Batteries (Electricity)
                     Related Term (Associative): ; Vehicle electrical systems (Qpu)
                    Batteries by chemical elements (Qtpfbb)
                        Aluminum air batteries (Qtpfbba)
                        Lead acid batteries (Qtpfbbj)
                        Lithium batteries (Qtpfbbm)
                            Lithium sulfur batteries (Qtpfbbms)
                        Nickel batteries (Qtpfbbn)
                            Nickel cadmium batteries (Qtpfbbnc)
                            Nickel iron batteries (Qtpfbbnj)
                                 Use For: Edison batteries; Iron nickel batteries
                            Nickel zinc batteries (Qtpfbbny)
                        Sodium sulfur batteries (Qtpfbbs)
                        Zinc chloride batteries (Qtpfbby)
                    Primary batteries (Qtpfbp)
                    Storage batteries (Qtpfbs)
                         Use For: Accumulators (Electricity)
                    Battery parts (Qtpfby)
                        Anodes (Qtpfbyb)
                        Cathodes (Qtpfbyc)
                        Battery electrodes (Qtpfbye)
                            Charge collectors (Qtpfbyec)
                                 Use For: Current collectors
                        Battery separators (Qtpfbyh)
                Fuel cells (Qtpff)
                     Related Term (Associative): Fuel cell vehicles (Qbddpef)
                Hydraulic accumulators (Qtpfh)
                Solar collectors (Qtpfs)
                     Related Term (Associative): Solar energy (Sose)
                    Solar cells (Qtpfss)
            Handling and conveying equipment (Qtph)
                Cargo handling equipment (Qtphc)
                     Use For: Freight handling equipment; Handling equipment; Materials handling equipment
                    Hand trucks (Qtphch)
                        Dollies (Qtphchd)
                    Loaders (Qtphcm)
                    Unloaders (Qtphcu)
                        Car dumpers (Qtphcuc)
                Catapults (Qtphd)
                Conveyors (Qtphe)
                    Belt conveyors (Qtpheb)
                    Pneumatic conveyors (Qtphep)
                         Related Term (Associative): Capsule pipelines (Pmnppb)
                    People movers (Qtphes)
                         Use For: Automated people movers; Passenger conveyors
                Hoses and nozzles (Qtphh)
                    Hoses (Qtphhh)
                        Water cannons (Qtphhhw)
                    Nozzles (Qtphhn)
                Lifting equipment (Qtphm)
                    Booms (Lifting equipment) (Qtphmb)
                    Cranes (Qtphmc)
                        Floating cranes (Qtphmcf)
                        Mobile cranes (Qtphmcm)
                    Derricks (Qtphmd)
                    Fork lifts (Qtphmf)
                         Use For: Forklift trucks
                    Hoists (Qtphmh)
                    Jacks (Mechanical equipment) (Qtphmj)
                        Hydraulic jacks (Qtphmjh)
                    Pallets (Qtphmp)
                    Slings (Qtphms)
                    Winches (Qtphmv)
                    Wheelchair lifts (Qtphmw)
            Containing equipment (Qtpk)
                Bags (Qtpka)
                Boxes (Qtpkb)
                Casks (Qtpkc)
                     Use For: Coffins (Casks); Spent fuel casks
                Containers (Qtpke)
                     Use For: Shipping containers
                Drums (Containers) (Qtpkg)
                Gabions (Qtpkk)
                Hoppers (Qtpkm)
                Pressure vessels (Qtpkn)
                Process vessels (Qtpkp)
                    Coalescers (Qtpkpc)
                Tanks (Containers) (Qtpkt)
                    Ballast tanks (Qtpktb)
                    Septic tanks (Qtpkts)
            Heating, cooling and ventilation equipment (Qtpm)
                 Related Term (Associative): Environmental control (Fcd); Environmental and sanitary systems in buildings (Pbpv)
                Cooling equipment (Qtpmc)
                    Air conditioners (Qtpmcc)
                    Refrigerators (Qtpmcr)
                Heating equipment (Qtpmh)
                    Boilers (Qtpmhb)
                        Parts of boilers (Qtpmhbc)
                            Air preheaters (Qtpmhbcb)
                                 Use For: Air heaters
                            Boiler tubes (Qtpmhbcd)
                                Economizers (Qtpmhbcde)
                            Feedwater heaters (Qtpmhbcf)
                    Burners (Qtpmhc)
                        Oil burners (Qtpmhcp)
                    Driers (Devices) (Qtpmhd)
                    Evaporators (Qtpmhe)
                    Furnaces (Qtpmhf)
                        Blast furnaces (Qtpmhfb)
                    Heat transfer devices (Qtpmhh)
                        Heat exchangers (Qtpmhhe)
                        Heat pipes (Qtpmhhp)
                        Heat sinks (Qtpmhhs)
                    Heaters (Qtpmhk)
                        Water heaters (Qtpmhkw)
                    Incinerators (Qtpmhm)
                    Ovens (Qtpmhp)
                        Cement kilns (Qtpmhpb)
                             Related Term (Associative): Kiln dust (Rbmdufk)
                        Drying ovens (Qtpmhpd)
                Ventilation equipment (Qtpmv)
                    Air intakes (Qtpmvb)
                    Defoggers (Qtpmvc)
                    Defrosters (Qtpmve)
                    Fans (Qtpmvf)
                    Ventilators (Qtpmvv)
            Lighting equipment (Qtpn)
                 Related Term (Associative): Lighting (Fcdm); Lighting systems (Pbpvm); Street lighting (Pmpv); Vehicle lighting (Qpum)
                Lamps (Qtpnm)
                    Electric lamps (Qtpnme)
                        Fluorescent lamps (Qtpnmef)
                            Vacuum fluorescent lamps (Qtpnmefv)
                        Incandescent lamps (Qtpnmej)
                        Mercury vapor lamps (Qtpnmem)
                        Sodium vapor lamps (Qtpnmes)
                    Lanterns (Qtpnmn)
            Furniture (Qtpo)
                Consoles (Qtpoc)
                     Use For: Control desks
                Seats (Qtpos)
            Photographic equipment (Qtpr)
                Cameras (Qtprc)
                     Related Term (Associative): ; Automated enforcement (Hra)
                    Digital cameras (Qtprcf)
                         Use For: CCD cameras
                         Related Term (Associative): Charge coupled devices (Qtbeb)
                    Stereoscopic cameras (Qtprcr)
                    Television cameras (Qtprct)
                         Related Term (Associative): Closed circuit television (Dsbpvc)
                    Video cameras (Qtprcv)
                         Use For: Camcorders
                Flash lamps (Qtprf)
                Videotape recorders (Qtprv)
            Safety equipment (Qtps)
                 Use For: Safety appliances; Safety devices
                 Related Term (Associative): 
                Barricades (Qtpsb)
                     Related Term (Associative): Barriers (Roads) (Pmrcpb)
                Protective clothing (Qtpsc)
                    Buckles (Fasteners) (Qtpscb)
                    Goggles (Qtpscg)
                    Safety hats (Qtpsch)
                        Helmets (Qtpschh)
                            Bicycle helmets (Qtpschhb)
                            Helmet use (Qtpschhh)
                            Motorcycle helmets (Qtpschhm)
                    Sunglasses (Qtpscs)
                Emergency equipment (Qtpse)
                    Alarm systems (Qtpseb)
                    Breathing apparatus (Qtpsed)
                    Fire fighting equipment (Qtpsef)
                        Fire extinguishers (Qtpseff)
                    Flares (Qtpseh)
                    Rescue equipment (Qtpser)
                         Use For: Lifesaving equipment
                        Life preservers (Qtpserm)
                             Use For: Personal flotation devices
                Medical equipment (Qtpsm)
                    First aid equipment (Qtpsmf)
                    Oxygen equipment (Qtpsmp)
                Training devices (Qtpst)
                     Related Term (Associative): Training (Cet)
                    Training simulators (Qtpsts)
                        Driving simulators (Qtpstsd)
                             Use For: Automobile driving simulators
                             Related Term (Associative): ; Automobile driving (Dcnbstyb)
                        Flight simulators (Qtpstsf)
                             Related Term (Associative): Aircraft pilotage (Dcnbscb)
                        Railroad simulators (Qtpstsr)
                             Use For: Locomotive simulators; Train operations simulators
                        Ship simulators (Qtpstss)
                             Use For: Bridge simulators; Maneuvering simulators; Navigation simulators
                Warning devices (Qtpsw)
                     Related Term (Associative): 
                    Audible warning devices in vehicles (Qtpswa)
            Tools (Qtpt)
                Augers (Qtptb)
                Chisels (Qtptc)
                    Gouges (Qtptcg)
                Clamps (Qtptd)
                Cutting tools (Qtpte)
                    Shears (Tools) (Qtptes)
                Drills (Qtptg)
                    Drill bits (Qtptgd)
                Grinders (Qtptj)
                Hammers (Qtptk)
                Machine tools (Qtptm)
                    Lathes (Qtptmm)
                    Sanders (Qtptms)
                Planers (Qtptp)
                Saws (Qtptr)
                Screwdrivers (Qtptt)
                Sprayers (Qtptv)
                    Spray guns (Qtptvs)
            Securing and joining equipment (Qtpu)
                 Related Term (Associative): Fasteners (Rbmnk)
                Anchors (Mooring devices) (Qtpub)
                     Use For: Mooring anchors
                Anchor windlasses (Qtpuc)
                Anchors (Structural connectors) (Qtpud)
                Arrester wires (Qtpuf)
                Couplers (Qtpuh)
                     Use For: Car couplers
                Drawbars (Qtpuj)
                Flanges (Qtpuk)
                Gaskets (Qtpum)
                Mooring cables (Qtpur)
                     Related Term (Associative): Cables (Rbmdxqc)
                Rings (Devices) (Qtput)
                Seals (Devices) (Qtpuv)
                    Oil seals (Qtpuvp)
                Tiedowns (Qtpuw)
                Towing devices (Qtpuy)
                    Hitches (Qtpuyh)
                         Use For: Trailer hitches
            Vending equipment (Qtpv)
                Ticket vending machines (Qtpvt)
                     Use For: Automatic fare vending machine; Automatic ticket machines
            Data processing equipment (Qtpx)
                 Use For: Data processors
                Calculators (Qtpxc)
                     Use For: Calculating machines; Electronic calculating machines
                Computers (Qtpxm)
                     Use For: Electronic computers; Hardware (Computers)
                     Related Term (Associative): ; Electronic equipment (Qtbe); Information processing (Xbk)
                    Types of computers (Qtpxmb)
                        Analog computers (Qtpxmbb)
                            Network analyzers (Qtpxmbbn)
                        Digital computers (Qtpxmbc)
                        Embedded systems (Qtpxmbe)
                        Supercomputers (Qtpxmbg)
                        Mainframe computers (Qtpxmbj)
                        Minicomputers (Qtpxmbn)
                        Microcomputers (Qtpxmbp)
                            Personal computers (Qtpxmbpc)
                                 Related Term (Associative): 
                                Handheld computers (Qtpxmbpch)
                                     Use For: Pocket computers
                                Laptop computers (Qtpxmbpcm)
                                     Use For: Notebook computers
                        Personal digital assistants (Qtpxmbr)
                        Word processors (Qtpxmbs)
                        Automotive computers (Qtpxmbv)
                             Use For: Automotive microcontrollers; In vehicle computers
                             Related Term (Associative): Vehicle electronics (Qpv); Microprocessors (Qtpxmpem); Mobile computing (Xbkdj)
                    Computer components (Qtpxmp)
                        Central processing units (Computers) (Qtpxmpb)
                            Circuit boards (Computers) (Qtpxmpbb)
                            Motherboards (Qtpxmpbc)
                            Computer memory (Qtpxmpbd)
                                 Use For: Computer storage devices
                                Random access memory (Qtpxmpbdp)
                                     Use For: RAM
                                Read only memory (Qtpxmpbds)
                                     Use For: ROM
                            Logic circuits (Qtpxmpbm)
                        Computer chips (Qtpxmpe)
                            Microprocessors (Qtpxmpem)
                                 Related Term (Associative): Automotive computers (Qtpxmbv)
                        Hard disks (Qtpxmpg)
                        Keyboards (Qtpxmpk)
                        Printers (Qtpxmpp)
                        Video display terminals (Qtpxmpq)
                             Related Term (Associative): Information display systems (Dsbg)
                        Visual display units (Computers) (Qtpxmpr)
                        Mice (Computers) (Qtpxmps)
                        Joysticks (Computers) (Qtpxmpv)
                        Input output devices (Qtpxmpx)
                Data plotters (Qtpxp)
                Data recorders (Qtpxr)
                Scanners (Qtpxs)
                     Use For: Electronic scanners
            Weapons (Qtpy)
                 Related Term (Associative): Guided missiles (Qbkomk)
                Bombs (Qtpyb)
                     Related Term (Associative): Explosives detectors (Dmgdre); Explosives (Rbmdse)
                Guns (Qtpyg)
                    Firearms (Qtpygf)
                         Use For: Handguns; Pistols
                Weapons of mass destruction (Qtpym)
                     Related Term (Associative): Terrorism (Huh)
                    Biological and chemical weapons (Qtpymb)
                         Related Term (Associative): Chemical agents (Rbmdscc); Poisons (Rbmdsp); Biological materials (Rbmumtd)
                    Nuclear weapons (Qtpymn)
                Mines (Weapons) (Qtpyo)
                     Use For: Land mines
        Assemblies (Equipment) (Qts)
            Subassemblies (Qtss)
                Components (Qtssc)
                Housings (Qtssh)
                Parts (Qtssp)
                    Spare parts (Qtssps)
    Equipment characteristics (Qv)
        Defects (Qvd)
             Related Term (Associative): 
        Mechanical failure (Qvf)
            Degradation failures (Qvfd)
            Leakage (Qvfm)
                Blowby (Qvfmb)
                Slippage (Leakage) (Qvfms)
                     Use For: Slippage loss
            Vapor lock (Qvfv)
        Mechanical loads (Qvm)
             Use For: Loading (Mechanical engineering)
        Performance (Qvp)
        Reliability (Qvr)
             Related Term (Associative): Fault monitoring (Dmbyr); Accuracy (Gmsh); Fault tolerant computing (Xbkdh)
        Maintainability (Qvs)
        Tolerances (Engineering) (Qvt)
             Use For: Damage tolerance
             Related Term (Associative): Specifications (Xxs)

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