And you already saw last time there was this relationship between the temperature and volume changes along an adiabatic path.

是条绝热路径，而上次你已经看到,沿着绝热路径温度和体积,的变化有这个关系。

麻省理工公开课 - 热力学与动力学课程节选

and final points, a relationship between the temperature and volume for the initial and final points.

我们就得到了,初末态的温度,和体积间的关系。

麻省理工公开课 - 热力学与动力学课程节选

So what we've discovered from this relationship dq that du at constant volume is equal to dq v.

从这个关系式里我们发现,恒体积时的du等于恒体积时的。

麻省理工公开课 - 热力学与动力学课程节选

Eventually we want the same relationship in the pressure and volume.

我们需要的是,压强和温度间的关系。

麻省理工公开课 - 热力学与动力学课程节选