扩散的

Finally, the existence, uniqueness and convergence of solution to the original reaction diffussion system are obtained by the properties of heat conduction equation.

借助于热传导方程与反应扩散方程组的同解性，最终得到了反应扩散方程组解的存在性、惟一性以及收敛性。

The comparison between experimetal and calculated results indicated that the simulation model and equilibrium phase diagram calculation can exactly describe the elements distribution law and predict microstructure variation near interface.

计算结果表明：该模拟方法能够准确描述热等静压扩散焊接过程中的元素浓度分布规律，同时能够预测扩散反应层内的微观组织变化。

These accidents will harm the people's life and property safety. After gas has leaked, it will diffuse along the earth's surface with the effect of exterior wind power and interior thickness grads.

由于气体本身存在的扩散性，发生泄漏之后，在外部风力和内部浓度梯度的作用下，气体会沿地表面扩散，在事故现场形成毒害或燃烧爆炸危险区，扩大危害区域。

According to the tentative reaction equation from single molecular reaction theory and the second and the frist Fike's laws,the expression of the weight percentage and the diffusing thickness,was derived.

基于单分子反应理论假设反应模型，结合菲克第二、第一定律，得到质量分数与扩散厚度的关系式，以此研究了范围内液态锡与铁反应过程中锡的扩散厚度。

Organisms can respond to high levels of intraspecific competition by dispersing away from the area of high population.density.

扩散生物可通过扩散离开种群密度高的地区，来对高水平的种内竞争做出反应。

In chemical plant,liquefacient ammonia leaking from refrigeration equipment usually disperse in the air and become dense gas at the beginning.With the air coming into the gas,it will be increasingly close to the air density and become non-dense gas.

化工厂制冷装置发生液氨泄漏，泄漏后形成毒气云团在空气中扩散，初期多形成重气云团，在扩散过程中随着空气的不断卷吸，重气云的密度会越来越接近空气，从而转变为非重气云团。

The diffusion coefficient of lith...

锂盐的扩散系数由对称电池的限制扩散法测得，结果为4.8×10-7cm2·S-1。

The third chapter clarifies the main factors affect the path of technological diffusion and the main types of it.

第三章阐明了影响技术扩散路径的主要因素，以及技术扩散路径的主要类型。

The equation of one dimensional mathematical model i human lung is built. The study is transformed from three-dimensional space one dimensional problem. This paper is base on the test of single breath washout. According the law of Pick and convction-difussion, we have t equation of one dimensional mathematical model.

论文以一次深呼吸氮清洗实验为研究基础，根据Fick定律和扩散对流定律得出一维一层喇叭口模型内气体传输和扩散方程，计算得出的模拟结果肺泡高坡区为一条水平直线，也没有明显的第Ⅳ区域。

Moreover, it is invented using familiarity with the point spread function and the line spread function created in physical optics.

除此之外，发明此函数之前也须要对物理光学中的点扩散函数和线扩散函数有深入的了解。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。