molecular diffusion

The study indicates that, the slippage effect is a combined result of gas molecule slip on capillary wall and gas molecular diffusion inside capillary tube, and also a result of combination of concentration and pressure fields.

研究认为，气体滑脱效应是毛细管壁处气体分子滑流和毛细管内部气体分子扩散的综合效应，是浓度场和压力场作用叠加的结果。

Molecular diffusion occurs in a gas as a result of the random motion of the molecules.

气体中的分子扩散是由分子的不规则运动产生的.

A molecular dynamics study of self diffusion on ag ( 100) surface

用分子动力学方法研究Ag（001）表面吸附原子的自扩散现象

Gas flow equation in porous media with a slippage effect was presented, combining with molecular diffusion theory. It is a theoretical foundation for further study on permeable theory, reservoir engineering, and performance analysis in low gas permeability reservoirs.

在考虑了气体渗流的特点后，结合分子扩散理论得到了考虑滑脱效应的气体渗流速度方程，为进一步开展低渗透气藏渗流理论研究，油藏工程研究和动态分析建立了基础。

On the basis of these, the calculating formula of reaeration coefficient considering the coupling of molecular diffusion and turbulent diffusion is brought forward.

在此基础上提出了水体同时考虑分子扩散和紊动扩散耦合的复氧系数计算公式。

The methane emission from soil to the atmosphere is mostly through rice plants, only small amounts of methane is released across the water-air interface via bobbles or molecular diffusion.

后者主要是通过水稻植株向大气释放，只有少量通过气泡或分子扩散从水田土壤通过田面水层向大气排放。

Using this rotational diffusion model, molecular volumes of alanine in different pH's were then calculated from the observed spin-lattice relaxation times and solution viscosities.

根据这个转动扩散模型，利用实验测定的自旋&晶格弛豫时间和溶液粘度计算了丙氨酸在不同pH值下的体积。

Molecular diffusion also occurs in liquids and solids.

分子扩散同样也会在液体和固体中发生。

The density maximum of water and some related properties such as distribution function and diffusion coefficient were simulated in NVT ensemble by applying molecular dynamics method.

本文采用分子动力学方法对NVT系综中水的密度极值问题以及分布函数和扩散系数等相关性质进行了模拟。

Molecular diffusion is the predominant mechanism controlling volatile organic compounds transport within the composite liner.

有机挥发性化合物在复合衬里中迁移时,其主要的机理是分子扩散作用.

This cause serious pollution problems because mass is transferred less rapidly by molecular diffusion than by eddy diffusion.

这些引起了严重的污染问题，因为通过分子扩散的传质比涡流扩散的要慢。

The experimental data fit well with that from three-compartment model analysis, it suggests that the fluorescence probe labelling process is mainly controlled by molecular diffusion.

实验结果和用三房空模型分析所得的理论值符合较好，提示荧光探剂的标记过程主要受分子扩散所控制。

For low carrier-gas velocities the HETP may become large owing to molecular diffusion effects.

载气线速低时,HETP是靠分子扩展影响而变大.

Molecular diffusion plays a significant role on the wax deposition on the inside tube wall while the shearing diffusion of wax particles plays little.

试验证实，蜡晶粒子剪切扩散对石蜡沉积没有作用，管内壁石蜡沉积主要是分子扩散的作用所致。

A passive detection tube for nitrogen dioxide gas has been developed based on the principle of the gas molecular diffusion and chemical adsorption.

研究一种简便、快速监测二氧化氮气体的方法，即二氧化氮被动式检气管法。