You just need a few macroscopic variables that are very familiar to you, like the pressure, the temperature, the volume, the number of moles of each component, the mass of the system.
你只需要某些你非常熟悉的宏观变量，比如压强，温度，体积，每个组分的摩尔数，系统的质量。
In the past, the hot point is the macroscopic model, which discusses the relationships among the traffic stream variables-speed, flow and density.
以前的研究主要集中于宏观模型，讨论交通流量及密度的变化。
In the past, the hot point is the macroscopic model, which discusses the relationships among the traffic stream variables-speed, flow and density.
以前的研究主要集中于宏观模型，讨论交通流量及密度的变化。
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