摘要
热力学系统内的理想气体分子存在着极其频繁的碰撞，为研究分子碰撞的统计规律，往往要作出一些简化的物理模型［１］。分子的平均相对速率（记ＶＲ）的引入，将使碰撞问题趋于简化，应用麦克斯韦分布律，找出ＶＲ＝２Ｖ的定量关系。然后应用ＶＲ推导出Ｚ和λ都是极方便的。
The ideal gas molecules in thermodgramic system collide very frequently. In order to study the statistical law of such collision, some simplified physics models are often required. The introduction of R, average relative velocity will make this problem simpler. In this article, the definite correlation of R=2 has been concluded by applying Maxwell distribution law. Thus to calculate and with R is also very convenient.
关键词
热力学系统
平均相对速率
速度分布函数
气相
thermodynamic system average nelative velocity velocity distribution law
