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Railroad SystemTraction Power SupplyOverhead Contact LineElectric TractionTraction PowerPower SupplyGerman Federal RailwayContact WireOverhead LineElectric OperationThree-phase DriveRapid Transit SystemElectric LocomotivesRail VehiclesTraction MotorsTraction UnitsElectric EquipmentElectric Multiple UnitsSwiss Federal RailwaysTraction Current
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