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Pantographs (Qpup)

Vehicles and equipment (Q)
    Vehicle components (Qp)
         Related Term (Associative): 
        Vehicle electrical systems (Qpu)
             Related Term (Associative): Engine electrical components (Qtbmbere); Electric batteries (Qtpfb)
            Vehicle lighting (Qpum)
                 Related Term (Associative): ; Lighting equipment (Qtpn)
            Pantographs (Qpup)