The design of locking device is one of the difficult points in the whole design of mechanism with alternating motion.

锁闭装置的设计是整个往复运动机构设计的一个难点。

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The design of locking device is one of the difficult points in the whole design of mechanism with alternating motion.

锁闭装置的设计是整个往复运动机构设计的一个难点。

youdao