If the gas mixture in the tube is stagnant, the transfer occurs by molecular diffusion.
如果管中的混合气体是不流动的，那么传递就通过分子扩散来进行。
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 results also demonstrate that the breakthrough curves have similar characters under the condition of higher scale of molecular diffusion.
模拟结果还表明在较高尺度分子扩散条件下，其穿透曲线具有相类似的特征。
Presently, passive HTO samplers are being widely used abroad. It samples HTO in air based on the principle of gas molecular diffusion and permeation.
目前被动式氚取样器在国外取得了广泛的应用，它是基于气体分子扩散或渗透原理采集空气中氚化水蒸汽（ HTO）样品的一种方法。
In certain locations where atmospheric turbulence is lacking, smoke originating at the surface of the earth is dissipated largely by molecular diffusion.
在某些气体湍流缓慢的区域中，地球表面产生的烟雾很大一部分是通过分子扩散而消散的。
On the basis of molecular diffusion Fick's law and principles of energy and mass conservation, a simplified model of frost growth on a surface is presented.
根据斐克分子扩散定理及能量、质量守恒原理，提出一种表面霜增长的简化模型。
This paper has main researches on the molecular diffusion in the process of CO2-oil displacing, carrying our deep experimental researches in PVT cell and porous medium.
本文主要研究注CO2驱油过程中的分子扩散问题，分别从PVT筒及多孔介质两方面进行深入的实验研究。
A new detection tube for formaldehyde gas based on passive sampling has been developed according to the principle of the gas molecular diffusion and chemical adsorption.
新研制的甲醛被动式检气管是建立在气体分子扩散和化学吸收原理基础上的。
Based on molecular diffusion model of water vapor a theoretical model of frost growth is established and an experimental set with a liquid nitrogen cooled tube is built up.
以蒸汽分子扩散模型为基础，建立了预测霜层生长过程的数学模型，并建立了以液氮为冷媒的管内强制流动结霜实验台。
The international researches and developments of molecular diffusion behavior in hydrogels, concerning with theoretic models and experimental methods, were reviewed in this paper.
主要从模型理论和实验研究方法两个方面综述了国内外聚合物水凝胶中物质扩散行为研究进展。
First we have established the testing method of CO2-crude oil system molecular diffusion tests, and then have carried out experimental tests in PVT cell and porous medium respectively.
首先建立了测试CO2 -真实原油体系分子扩散实验测试方法，分别在PVT筒内及多孔介质内进行了分子扩散实验测试。
But in practice or theoretical studies, most people follow a wrong opinion that for a fractured reservoir molecular diffusion is negligible during gas injection as for a non-fractured reservoir.
然而在油藏开发实践和理论研究中，大多习惯性地将对常规油藏注气开采中分子扩散作用的认识沿用到裂缝性油藏注气开发中，即认为分子扩散可以忽略。
The effects of geometric shape of fracture in stagnant pool and relative molecular diffusion degree on the solute transport are analyzed according to the characters of different breakthrough curves.
尝试从不同穿透曲线的特征分析来解析带滞水区裂隙的几何形态及相对分子扩散程度对溶质运移的影响。
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。
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。
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。
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