contact rail
ray có điện
contact rail /giao thông & vận tải/
ray dẫn điện
conductor rail, contact rail, live rail, third rail
ray có điện
conductor rail, contact rail, live rail, third rail
ray thứ ba
conductor rail, contact rail, live rail, third rail /giao thông & vận tải/
ray tiếp xúc
bar, bus, conductor rail, contact rail, live rail, third rail
ray dẫn điện