valve

名词 valve:

1. a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
2. device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
3. control consisting of a mechanical device for controlling the flow of a fluid

1. Composed of a single valve or piece. Used of a shell.
   单瓣的由单个瓣膜或部分组成的。用于壳
2. The pump sucks air out (of the vessel) through this valve.
   这台泵通过这个阀门把(容器中的)空气抽出。
3. We need an eye bolt to fit this valve.
   我们需要一个有眼螺栓来固定这个阀门。
4. Have you turned off the water valve?
   你关掉水阀了吗？