automatic block equipment

自动闭锁设备,automatic... ... ) locking device 锁闭设备 ) automatic block equipment 自动闭塞设备 ) coupler lock 自动闭锁 ...

自动闭... ... ) automatic installation 自动设备 ) automatic block equipment 自动闭锁设备 ) closed-end equipment 设备闭锁 ...