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door locking

door locking

door locking

door locking

2

Door locking device (with door in open position ) in addition to lock on the door.

门锁装置（当在开门的位置时）应另外给门上锁

3

5

standard test methods for detention sliding door locking device assembly

安全滑动门锁装置组件的标准试验方法

6

test methods for detention sliding door locking device assembly

锁销式滑动门锁装置组件试验方法

7

Internally operated central door locking

车内中控锁开关

8

Standard for Elevator Door Locking Devices and Contacts

什降门关闭装置和触点标准

9

Discussion about Design of Door Locking Mechanism on Hopper Car

关于漏斗车门锁闭机构设计的讨论

10

Tipper hydraulic trash back door locking device

自卸车垃圾箱后门液压锁紧装置

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