valve
柯林斯词典
1. N-COUNT A valve is a device attached to a pipe or a tube that controls the flow of air or liquid through the pipe or tube. 阀门
返回 valve
valve /vælv/ (valves)
剑桥词典
- a device that opens and closes to control the flow of liquids or gases , or a similar structure in the heart and the veins that controls the flow of blood
阀；活门；（心脏或血管的）瓣膜
The valve failed to open /close . 阀门打不开／关不上了。
It was a weak heart valve that caused her death . 是心瓣膜问题导致了她的死亡。
part of a musical instrument such as a trumpet that changes the sound by controlling the flow of air
（喇叭等乐器的）阀键，活塞 返回 valve