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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We are finding a parametric equation for the sphere using two variables phi and theta which happen to be part of the spherical coordinate system.

我们建立有两个变量φ和θ的球面的参数方程,它们恰好是,球坐标系统的一部分。

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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。

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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