通常所称的气体分子平均自由程并未计及容器器壁的影响。
In general, in calculating mean free-path of gaseous molecules, the effect of container is not considered.
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.
几何平均自由程或容器的特征尺度是低压下描述气体分子热运动的重要物理量。
The mean geometric free path or the characteristic dimension of a container is the important physical magnitude in describing the heat motion of gas molecules under low pressure.
电子复自能的虚部给出了空间和角度相关的微分倒数非弹性平均自由程(diimfp)。
The imaginary part of the complex self energy of electron provides spatial and angular dependent differential inverse inelastic mean free path (DIIMFP).
结果表明：随核物质同位旋非对称度的增大，质子平均自由程减小而中子的平均自由程增大。
It is shown that as increasing the isospin asymmetry, the proton mean free path decreases while the neutron one increases.
金属中自旋翻转散射长度远长于电子平均自由程，近来关于自旋翻转散射效应的研究主要集中于扩散区域。
Because the spin-flip length is longer than the electron mean-free-path in a metal, past studies of spin-flip scattering were limited to the diffusive regime.
结果表明，射频功率的改变直接影响到离子对衬底的轰击效应，而反应气压的改变影响气体分子的平均自由程。
Results show that the change of power affects ions' bombardment on the substrate, and that of pressure lead to the change of the mean free path of the molecular.
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.
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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