锁止装置可以使用适当的钥匙从锁止位置松开。
The locking device can be released from the locked position only by means of an appropriate key.
设有多重安全保护装置：超重装置，断链装置，上升过程中的自锁装置，每个立柱上均有锁止装置。
There are multiple safe protectors: Overweight device, chain fracture device, device of the lock when it rised, there is a lock that stops the device on each post.
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