This means that the operating mechanism must be able to move sufficiently far enough away from the valve to allow the valves to be fully closed against its seat by the valve spring.

这意味着操作机构必须离阀门足够远以允许阀门通过气门弹簧使其完全关闭。

youdao

This means that the operating mechanism must be able to move sufficiently far enough away from the valve to allow the valves to be fully closed against its seat by the valve spring.

这意味着操作机构必须离阀门足够远以允许阀门通过气门弹簧使其完全关闭。

youdao