The valve has jammed shut.

阀门给卡住了打不开。

《牛津词典》

Threaded through a person's blood vessels, the sensor can provide blood pressure readings at the valve of the heart itself.

这种传感器可以穿过人体的血管，提供心脏瓣膜处的血压读数。

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The pump sucks air out through the valve.

气泵通过阀门把空气抽出去。

《牛津词典》

But if you touch the valve going into your tire which basically measures the temperature of the air going into your tire, that is getting hot, right.

以至于浑身发热,如果你摸气筒的阀门,相当于近似测量了进入轮胎的气体的温度，它会很热，对吧。

麻省理工公开课 - 热力学与动力学课程节选

Lastly, up here, is a picture of a much smaller device, this is actually an artificial heart valve that is made of plastics and metal and can replace the valve inside your heart.

最后,在上面这里,这张图片是一个相对较小的装置,这实际上是一个人工心脏瓣膜,由塑料和金属制成,可以取代人的心脏瓣膜

耶鲁公开课 - 生物医学工程探索课程节选

So the Joule free expansion involves opening this valve and asking what happens when this gas moves into the other bulb or distributes between the two.

焦耳自由膨胀就是,打开阀门后的过程,气体从一个腔跑到另一个腔,并在它们之间平均分配。

麻省理工公开课 - 热力学与动力学课程节选

Once in the proper place the new valve can be deployed, pushing the older valve aside.

FORBES: Breakthrough Heart Valves: How Will Patients Decide?

The new technology of the early 1800s that produced the valve horn also made possible the valve trumpet.

NPR: Young Tuba Player Gets Nod from Phila. Orchestra

In Europe, not only is the valve on the market, it is already in a newer iteration with a thinner.

FORBES: New Heart Valves Prove We're Living In The Future