摘要
首先对输运过程中穿过参考截面ΔS的气体分子自由程的平均值λ穿为什么不等于λ而是大于λ作出了定性解释,然后通过定量计算求出了λ穿=2λ·
At first, a kind of qualitative explanation why the mean free path of molecule （ λ穿） passing through a certain reference section in the course of transportation is not equal to but larger than λ is brought forward, and then, λ穿 = 2λ is worked out by means of quantitative calculation.
出处
《怀化学院学报》
2006年第5期158-159,共2页
Journal of Huaihua University
关键词
自由程
概率
平均值
free path
probability
mean value
