手操机构：自动控制在不正常情况下可以手动操作阀门的启闭。
HART institutions: automatic control under normal circumstances you can not manually open and close the valve.
如何在现存压铸机的基础上，进行压射机构的改造并对压射实现自动控制，这是一个很有研究意义的问题。
It is a problem of much research meaning that Redesign of Press - shoot Organization is made and Auto - control of Press - shoot is achieved on the base of extant die - casting machine.
介绍了一种基于双凸轮结构的摩托车发动机可变配气正时(VVT)机构自动控制装置。
An automatic control device of motorcycle variable valve timing (VVT) mechanism is introduced based on double CAM structure.
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