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

So if you've got to pump that tire really a lot, then you're going to you're going to really feel a lot of heat there. The compression of the basically it's an adiabatic compression.

所以若果你给轮胎，打了很多的气，你会觉得你感觉,阀门那儿非常的烫，这种压缩,基本上是一个绝热的压缩。

麻省理工公开课 - 热力学与动力学课程节选

and they do not know how to fix the tire.

而车上的人对此束手无策。

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This is real, unlike the Joule coefficient which is very small so that most gases have tiny Joule coefficients. So if you do a Joule experiment, you hardly measure a temperature change. With real gases, here you do actually measure it. You can feel it with your finger on your bicycle tire.

系数那样小以至于,大多数气体的焦耳系数,都很小，所以如果你做焦耳实验,很难测量出温度的变化,对于真实气体，你可以测量它，你能通过手指按在,自行车轮胎上来感觉到它。

麻省理工公开课 - 热力学与动力学课程节选