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

That's important because one of the attributes of stem cells is that they remain at their site and capable of reproducing themselves.

这非常重要,因为干细胞的性质之一,就是它们能维持自身的状态,并能进行再分裂

耶鲁公开课 - 生物医学工程探索课程节选