短語詞組短語rail eddy current braking 軌道渦流制動rail return current 鋼軌廻流rail leak current 鋼軌漏泄電流Irail Rail current 鋼軌電流third rail current collector 第三軌集電器Rail current pylon 高架電纜Third -rail Current Collection 三軌受電eddy current rail brake 渦流緩行器steady current rail circuit 穩(wěn)定電流式軌道電路 返回 rail current