而该种分子的平均自由程等于它的平均速率与平均碰撞频率之比。
The average free path of this molecule is equal to the rate of its average speed to average collision frequency.
本文导出了混合理想气体中分子相对速度的分布，并由此计算了混合理想气体中分子的碰撞频率和平均自由程。
At present paper, we deduced the relative velocity distribution of mixed ideal gas molecule. Then we got the average collide frequency and average free distance.
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