Open and close valve is equipped for front-end memory type alloy detector and upper shifting fork.

并设前端装记忆合金检测器与上拨叉配合的开闭阀。

youdao

Open vent needle valve and bleed air from hose. Then close vent valve.

开启排气针形阀，并从软管排放空气。然后关闭排气阀。

youdao

Check the valve parts before installation. Open and close the valve by hand for a period check the open-close position of the valve gate.

检查阀门各部位是否有松动现象，对阀门进行手动开启、关闭一个周期是否有异常现象，同时检查阀门的启闭位置是否准确。

youdao

It's an overhead valve engine with a single camshaft that uses push rods to open and close the 16 valves.

FORBES: The Engine That Could