摘要
定性解释单位时间内穿过单位面积截面的分子数大于。
In this paper, It is explained that the number of the molecules passing through per unit area in per unit time is more than nv.
关键词
分子数密度
平均速率
麦克斯韦速度分布律
density of molecule number
mean velocity
the rule of J.C.Maxwell velocity distribution
