Terms for subject Rail transport containing 4

English	Chinese
check 4 mm opening of a switch point	4 毫米锁闭
check 4 mm opening of a switchpoint	4 毫米锁闭
north-south and 4 east-west lines	四纵四横 4
2-stage/4-yard marshalling station	二级四场编组站
4-wire transmission	四线传输
2/4 wire voice frequency interface	2/4 线音频接口