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Roller bearings (Qtbmydsr)

Computer viruses ()
Vehicles and equipment (Q)
    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)
            Machines (Qtbm)
                Machinery (Qtbmy)
                    Bearings (Qtbmyd)
                         Related Term (Associative): Bridge bearings (Pdybbfe); Engine bearings (Qtbmbermm)
                        Shaft bearings (Qtbmyds)
                            Roller bearings (Qtbmydsr)