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valved /vælvd/

Anh-Việt Anh-Anh

Tính từ

(kỹ thuật) có van

(thực vật học); (động vật học) có mảnh vỏ
noun

plural valves

[count] a mechanical device that controls the flow of liquid, gas, etc., by opening and closing

They turned off the main water valve to the house.

a device in some musical instruments (such as trumpets) that you press to play different notes - see picture at plumbing

medical :a structure in the heart, stomach, etc., that temporarily stops the flow of fluid or that allows fluid to move in one direction only

a heart valve

Brit :vacuum tube