[N-COUNT 可数名词]阀;活门 A valve is a device attached to a pipe or a tube which controls the flow of air or liquid through the pipe or tube.
2
[N-COUNT 可数名词](心脏的)瓣,瓣膜 A valve is a small piece of tissue in your heart or in a vein which controls the flow of blood and keeps it flowing in one direction only.
He also has problems with a heart valve.
他的一个心瓣也有毛病。
3
See also:
safety valve
;
Oxford
valve/vælv; NAmEvælv/noun1a device for controlling the flow of a liquid or gas, letting it move in one direction only 阀;阀门;活门;气门2a structure in the heart or in a veinthat lets blood flow in one direction only (心脏或血管的)瓣膜3a device in some brassmusical instruments for changing the note (铜管乐器的)阀键,活塞valvevalvesvalve/vælv; NAmEvælv/
LDC
valvevalve /vælv/ ●○○ noun [countable]
Word Origin
Examples
word sets
Collocations
1valve (2)valve (1)a part of a tube or pipe that opens and shuts like a door to control the flow of liquid, gas, air etc passing through it: heart valves2the part on a trumpet or similar musical instrument that you press to change the sound of the note3British English a closed glass tube used to control the flow of electricity in old radios, televisions etcSYN vacuum tube American English
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