Devices that control fluid or gas flow in pipes or engines.

控制液体或气体在管道或发动机中流动的装置。

Membranous flaps in the body that allow one-way flow.

身体内只允许单向流动的膜状瓣膜结构。

British term for vacuum tubes used in electronic circuits.

英式说法，指电子电路中的真空管。

Separating parts of shells, fruits, or anthers that open.

贝壳、果实或花药中可开启的分瓣部分。

Third-person singular present of valve; controls flow by a valve.

动词 to valve 的第三人称单数现在时；用阀控制流动。

Plural of valve.

valve 的复数形式。