In this case here, our property is the value of the pressure times the volume, times the molar volume. That's the property.

或者电阻,对气体来说，它的特性是气体压强。

麻省理工公开课 - 热力学与动力学课程节选

And we combine this with first law, which for the case of pressure volume changes we write as this.

结合第一和第二定律,对于压强体积功我们可以这样写。

麻省理工公开课 - 热力学与动力学课程节选

Wrev w reversible. in this case here let's see this is it's a pressure is going down.

曲线下的面积，可逆过程的功,这个过程中。

麻省理工公开课 - 热力学与动力学课程节选

In this case it relates the volume to the pressure and the temperature.

现在假想我们需要用,理想气体定律来设计一台机器。

麻省理工公开课 - 热力学与动力学课程节选