For this kind of multiply independent variables system, we need to build up a complex mathematic model.

对于这种多个自变量的非线性系统，需要建立复杂的模型。

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The glacial system is governed by two basic climatic variables: precipitation and temperature.

冰川系统由两个基本的气候变量控制：降水和温度。

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In the System variables pane, click New.

在系统变量窗格中，单击新建。

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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

If you have the number of moles and two intensive variables, then you know everything there is to know about the system.

如果你有摩尔数,和两个强度量，你就能知道关于这个系统的一切,关于系统的平衡态的一切。

麻省理工公开课 - 热力学与动力学课程节选

We're going to find other properties that do care about the history of the system like work, that you put in the system, or heat that you put in the system, or some other variables But you can't use those to define the equilibrium state.

我们还会发现其他一些,与系统的历史有关的性质,比如你对系统做的功，或者你向系统传递的热量，或其他的变量,但你不能用它们,来定义平衡态。

麻省理工公开课 - 热力学与动力学课程节选

This is why one of the most vital projects of this new century, defined by climate change and growing energy and resource scarcity, is to figure out a way to build these variables back into our economic system.

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