You have extensive properties and intensive properties The extensive properties are the ones that scale with the size of the system.

广延量,和强度量,广延量的值,随着系统的规模变化。

麻省理工公开课 - 热力学与动力学课程节选

So now I have my first of my two slopes, in terms of something that's related to my system the heat capacity of the system.

好，我们现在得到了，两个微分式中的一个,它等于与系统密切相关的一个量。

麻省理工公开课 - 热力学与动力学课程节选

He goes back and redoes the calculation, only in this case he says what I am going to do is I am going to redo the calculation for helium, but I am going to consider not just the mass of the electron but the reduced mass of the system.

他回去重新做了计算，仅在这种情况下他才会说说我将要,为氦重做计算，但我认为,不只是电子的质量,还有系统质量的减少量。

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The amount of work you've put in to get here depends on the path. It's not a function of state.

这些量就能,决定系统的状态了。

麻省理工公开课 - 热力学与动力学课程节选

So the temperature is intensive, and you can make intensive properties out of the extensive properties by dividing by the numberof moles in the system.

所以温度是强度量，你可以通过,除以系统中物质的摩尔数,来从广延量中导出强度量。

麻省理工公开课 - 热力学与动力学课程节选

These are physical knobs that are available us as experimentalists. And so when we turn these knobs on our system, we want to know how the enthalpy is changing for that system.

这些都是我们做实验可,以得到的物理变量,所以当我们在系统中,改变这些量的时候。

麻省理工公开课 - 热力学与动力学课程节选

So I can make a quantity that I'll call V bar, which is the molar volume, the volume of one mole of a component in my system, and that becomes an intensive quantity.

所以我可以定义，一个叫做一横的量，这是摩尔体积系统中,一摩尔某种组分的体积，它就变成了。

麻省理工公开课 - 热力学与动力学课程节选

It's a closed system, so the number moles doesn't change.

这是一个封闭系统，因此摩尔量不会改变。

麻省理工公开课 - 热力学与动力学课程节选