So, these on-changing properties that describe the state of the equilibrium state of the system are called state variables.

这些描述,系统平衡态的,变化的属性,就叫做状态变量。

麻省理工公开课 - 热力学与动力学课程节选

So what they do is, they're describing how these thermodynamic properties change, in terms of only state functions and state variables.

他们的作用是描述,随着状态函数和状态变量的变化，系统的热力性质如何变化。

麻省理工公开课 - 热力学与动力学课程节选

Some of the poems in this book dramatize, and describe the stylistic changes I'm talking about.

这本书里的一些诗歌生动表现，描述了我所讲的这种风格变化。

耶鲁公开课 - 现代诗歌课程节选

OK, now we actually would like to simplify this or to write this in terms of not the volume change, v2/v1 but the pressure change. So, we have V2 over V1.

接下来我们将要把问题简化,不用体积变化来描述，而改作用压强变化来描述，现在我们有。

麻省理工公开课 - 热力学与动力学课程节选