valve
[vælv]
n. [机]阀；[解]瓣膜；[电子]真空管；[机]活门
vt. 装阀于；以活门调节
参考例子
1.Replace the cylinder outlet seal and valve cap.
替换钢瓶排气口密封和阀门帽。
2.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。
3.Adding air pressure within the annular space between the body and the sleeve can open, throttle, or close the valve.
在阀体和套管的环形空间内施加气压，就能够实现开启、节流或关闭阀门的功能。
英文解释
n.
1.a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through i
2.device in a brass wind instrument for varying the length of the air column to alter the pitch of a t
3.control consisting of a mechanical device for controlling the flow of a fluid
网络释义
valve
阀门; 阀门==滑老; 电子管; 汽门嘴;
check valve
止回阀; 单向阀; 逆止阀; 止回阀，单向阀;
plunger valve
柱塞式阀; 活塞式阀; 柱塞阀; 释义：柱塞阀;
flapper valve
片状阀; 铰链阀; 旋启式止回阀; 瓣阀;
changeover valve
多向阀; 切换阀; 旋转阀; 变位阀;