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。
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。
The former one was caused by the molecular diffusion from bulk to interface and the latter one was caused by the relaxation of H2D molecules at interface.
液滴扩张和收缩时，H2D分子存在从体相到表面的扩散快过程和分子在表面上的弛豫慢过程两个弛豫过程。
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。
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。
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。
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。
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。
By using the molecular dynamics theory and diffusion limited aggregation model of film growth, the fractal phenomenon of the nodule nucleation was well explained.
用分子动力学和薄膜生长的扩散限制聚集模型，薄膜中结瘤微缺陷成核时的分形现象得到了很好的解释。
The differences of diffusion properties between class I and class II hybrid membranes were also investigated by molecular dynamics simulation.
本文还通过分子动力学模拟考察了第i类杂化膜与第ii类杂化膜扩散性质的差别。
In this paper, we study coupled diffusion processes with smooth coefficients, which model the system of the molecular motor.
本文研究光滑系数的耦合扩散过程，这是一个刻画分子马达系统的数学模型。
Molecular simulation is used to calculate the diffusion coefficient of thiophene and n-heptane in PEG membrane.
并通过分子模拟方法模拟了噻吩和正庚烷在PEG膜中的扩散系数。
Meanwhile, Molecular Dynamic method is adopted to simulate the diffusion behaviour of Al-Mg system in this work.
与此同时，本研究选取了分子动力学方法作为模拟铝-镁扩散体系的模拟方法。
Molecular Mechanics and Molecular dynamics have been performed to study the adsorption and the diffusion, and optimize the configuration and the energy of glycine molecules in carbon nanotubes.
采用分子力学、分子动力学方法模拟研究了甘氨酸分子在单壁纳米碳管中的吸附和扩散行为，并对甘氨酸分子在纳米碳管中的构象和能量进行了优化。
This Model Vacuum pump can be used along, or as the backing pump of the other kinds of pumps, such as booster pump, diffusion pump, molecular pump etc.
它可以单独使用，管道泵也可作为增压泵、扩散泵、分子泵的前级泵使用。
When the curing extent was about 60 percent, the molecular weight raised rapidly and diffusion control was incorporated to describe the cure in the latter stages.
当反应程度达到60%左右后，由于交联程度增加，分子质量迅速增大，分子间扩散较慢，进入反应的第二阶段，主要由扩散作用控制固化速率。
It can be used alone, can also be used as booster pumps, diffusion pumps, molecular pumps pump before use.
它可以单独使用，也可作为增压泵、扩散泵、分子泵的前级泵使用。
The diffusion process of the vacancy near diamond (001) surface and the effects of temperature on the vacancy diffusion were investigated by molecular dynamics simulation.
用分子动力学方法模拟了空位在金刚石近(0 0 1)表面的扩散过程，研究了温度对空位扩散的影响。
Thus oil recovery is enhanced. The mechanism of molecular filming agent mainly includes absorption, wettability alteration, diffusion and capillary imbibition etc.
分子膜剂作用机理主要表现在吸附作用、润湿性改变、扩散作用、毛细管自吸作用等几个方面。
Thus oil recovery is enhanced. The mechanism of molecular filming agent mainly includes absorption, wettability alteration, diffusion and capillary imbibition etc.
分子膜剂作用机理主要表现在吸附作用、润湿性改变、扩散作用、毛细管自吸作用等几个方面。
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