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

If Frederick Jackson Turner had anything right in "The Frontier Thesis", although he didn't pay hardly any attention to the South, this idea of a safety valve of a West to move to was surely there for slavery.

如果弗雷德里克·杰克逊·特纳,在《边境论》中有什么正确的言论,那就是,尽管他对南方几乎没有施以任何关注,即这个西进运动是一道安全阀的构想,显然是为奴隶制而设的

耶鲁公开课 - 美国内战与重建课程节选