diffusion

Through the theoretical analysis of the diffusion coefficient of oxygen in crashed coal, its calculation formula was obtained.

根据松散介质中气体扩散的理论分析，得出了松散煤体中氧气等效扩散系数的理论计算公式。

Geological factors controling gas diffusion loss in strata section

控制地层剖面中天然气扩散散失的地质因素

( It is the question once again of polygenesis versus diffusion from a single origin. )

( 再次涉及到不同的游戏发展自同一源头的问题. )

This phenomenon , peculiar to the two-dimensional wave motion, is sometimes called diffusion.

二维波所特有的这种现象, 有时叫做弥散现象.

...the processes of diffusion and osmosis.

扩散与渗透过程

Theoretical derivation of TSP atmospheric diffusion model in conditions of light air and calm

小风和静风状态下TSP大气扩散模式的理论推导

For some viruses the encounter with a surface is probable diffusion-limited.

有些病毒与表面接触可能受到扩散的限制.

This regime is termed mass transport or diffusion limited.

这种方式被称作质量输送或扩散控制.

Nevertheless, temperature has a very significant effect on the rate of diffusion.

但是温度对扩散速度却有非常大的影响.

Clouds cause the diffusion of light from the sun.

云使阳光漫射.

The invention of printing helped the diffusion of learning.

印刷术的发明有助于知识的传播.

Certain fishes have a swim bladder which aids in diffusion of gases.

有些鱼有鳔,它有助于散布气体.

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。

According to the microstructure development of mortar, TSA includes the following four procedures: diffusion of ions, ettringite formation, gypsum formation and thaumasite formation.

从微观角度分析，将TSA侵蚀过程分为四个阶段：离子迁移期，钙矾石生成期，石膏生成期和碳硫硅酸钙生成期.评价的形成性问题；

Integrating the 2-D diffusion equation, the coefficient of saturation recovery is derived and its characteristics can be revealed clearly. Then the theoretical expression of coefficient of saturation recovery under the strong equilibrium condition and the corresponding calculating value have been obtained.

在此基础上积分二维扩散方程，得到了恢复饱和系数，阐述了它的特性，进而导出了在强平衡条件下的恢复饱和系数的理论表达式和相应的数字结果。

Based on the theory of convective diffusion, the theoretical equation for interwell tracer production concentration is derived by the stream tube method.

以对流扩散理论为基础，利用流管法导出了井间示踪剂产出浓度的理论公式。

Finally, applying the theory of diffusion, the theoretical equations of the air concentration distribution are derived.

并应用扩散理论推导出掺气浓度分布曲线的理论公式。

There are data on the rates of diffusion of molecules.

有关于分子扩散速度的数据。

The invention of the printing press announced the diffusion of knowledge.

印刷术的发明预示着知识的传播.

Traditional systems have used oil diffusion pumps.

常规的系统使用油扩散泵.

Experimental investigation on variation of geochemical compositions of natural gas during diffusion under stratigraphic condition

地层条件下天然气扩散过程中地球化学组分变化的模拟实验研究

A structure relaxation model based on the empirical electron theory of solids and molecules is developed to compute the diffusion active energies of C, N in γ Fe.

在固体与分子经验电子理论基础上提出了用结构弛豫模型计算C，N在γFe中的扩散激活能。

The diffusion process seems to be accelerating.

传播过程看来正在加速.

The effect of the diffusion capacitance can be troublesome.

扩散电容会引起麻烦.

Firstly sufficient conditions for the existence of periodic solution are obtained by comparison theory of reaction-diffusion differential equations;

利用反应扩散方程的比较原理给出了系统存在周期解的充分条件。

We use human capital and domestic R& D as variable that measure the absorptive capability, and compare the results. We find that the low human capital level baffle the absorption of technology diffusion more.

而通过人力资本和国内研发分别作为吸收变量的系数比较，发现目前人力资本水平低下对中国技术扩散吸收的阻碍更大。

Theoretical Calculation of Diffusion Coefficient and Viscosity of Binary Mixture of Hydrogen Atom With Hydrogen

氢原子在氢气中的扩散系数和粘滞系数的理论计算

Dividing of gas diffusion system in stratigraphic section and its significance

地层剖面中天然气扩散系统划分及其研究意义

Regarded fabric as homogeneous porous media, this paper arrives at the theoretical equation of fabric ′ s diffusion moisture performances in different directions with the law of Hydromechanics.

通过将织物抽象成均匀的多孔介质，利用流体力学原理推导出织物各方向扩散的理论方程。

A plastic membrane serves as selective diffusion barrier.

一层塑料薄膜起着选择性渗透屏障的作用.