Some methods use impact to retract the locking bolt, most of which are destructive.
个别方法利用冲击力来使锁闸缩回，但大多数都会令材料解体。
The locking bolt is provided with an outer thread mating with the expansion pipe at the peripheral surface and has a groove at one end.
一锁定螺栓，其周面上具有与膨胀管相匹配的外螺纹，并在其一端设有凹槽。
By using the finite element method, the dynamic stress caused by vertical contact impact between bolt locking surface and barrel extension locking surface of a new rifle was studied.
采用有限元方法研究了某新型自动步枪枪机闭锁面与节套闭锁面间垂直接触碰撞的动应力。
When using the swivel chain between two cars, again through the bolt will turn on both ends of the chain (meet) the pin hole up and down together, and then the bolt locking.
使用时将转环链放于两车之间，再通过插销将转环链两端（碰头座）的上下销孔连接在一起而后将插销锁紧即可。
The cover also comprises a locking mechanism which is used to fix the cover body on the cab, and the locking mechanism comprises a cover lock mounted on the cover body and a bolt arranged on the cab.
还包括用于将罩体固定在驾驶室上的锁紧机构，该锁紧机构包括安装在罩体上的面罩锁和设 置在驾驶室上的锁舌。
International standard five-bolt structure: With the prying-resistant trigger bolt and indoor locking dead bolt for security and the mechanical key for emergency access;
国际标准五锁舌结构：有防撬保险舌和室内反锁大方舌，具机械钥匙应急开门；
International standard five-bolt structure: With the prying-resistant trigger bolt and indoor locking dead bolt for security and the mechanical key for emergency access;
国际标准五锁舌结构：有防撬保险舌和室内反锁大方舌，具机械钥匙应急开门；
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