该电池盖卡锁结构操作方便，结构简单。
The clamping and locking structure for the battery cover has the advantages of convenient operation and simple structure.
分析了闭锁阀在使用过程中出现的问题，阐述了改用智能卡锁控阀的使用方法。
The problems existing in the course of utilization of locked valves are analyzed, and the method for using intelligent card locked valves are described.
转膛体作间歇的转停运动，在其停留位置上，为了实现准确可靠的定位，设置有双向卡锁装置。
In its pausing position, a locker device is set symmetrically to precisely and credibly locate the proper position of the revolver.
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