The paper analyses the diffusion conditions of air boundary layers, the distribution and forecast of source air pollution and the current situation of air pollution.
分析了大气边界层扩散条件、大气污染源分布及预测、大气污染现状。
We then studied the effect of different diffusion conditions on the structure of microcapsules by laser confocal scanning microscope and scanning electron microscope.
我们使用激光共聚焦显微镜和扫描电子显微镜，研究了不同扩散条件对所得微胶囊结构的影响。
This modeling system has the same conditions as Gaussian diffusion model, and can calculate any concentration isoline's rigor time space location and specific points location.
所有公式使用条件与高斯扩散模型相同，可用于直接求取任意浓度等值线精确的时、空位置及其特征点位置。
Then this paper studied the effect of diffusion coefficient on concentration distribution and the conditions of substitution with numerical dispersion for physical diffusion.
通过将该半解析解与忽略扩散的数值解进行对比分析，讨论了数值弥散代替物理扩散的条件。
Turing showed that under specific conditions of chemical reaction and diffusion, the homogeneous distribution becomes dynamically unstable and a different stable pattern emerges.
图灵向人们展示，在化学作用和均化的明确条件下，同质分布会变得活跃而不稳定，一个不同的稳定格局会出现。
The results show that the effect of plasma diffusion on soliton's behaviour should be taken into account under the experimental conditions.
实验结果表明，在目前情况下有必要考虑等离子体扩散对孤立子行为的影响。
The effect of water content on diffusion of pesticides under very dry conditions has been investigated.
人们曾经研究了在十分干燥的情况下水分含量对农药扩散的影响。
Permeability of concrete and its correlation with chloride ion diffusion coefficient under different test conditions including water pressure method and tension method are studied.
本课题主要研究混凝土在水压法及张力法试验条件下水在混凝土中的渗透行为以及同氯离子扩散系数相关性。
In the chapter there of this paper, we consider the uniqueness and the existence of solutions of the following reaction diffusion system with nonlocal boundary conditions.
本文第三章讨论的是如下非局部边界条件的反应扩散系统解的存在性和唯一性。
Moreover, we study numerical methods for two kinds of diffusion equations, and discuss how to deal with numerically different boundary conditions and the nonlinear diffusion.
同时，我们详细研究了两类扩散方程的差分格式，讨论了处理各类边界条件的方法，以及处理非线性扩散的方法。
In this thesis, the accuracy and the validity conditions of the diffusion equation as a forward model for the optical tomography was firstly studied.
本文首先研究了扩散方程作为光学层析成像问题的正向模型的精确性及其适用条件。
Results from our model revealed that oxygen uptake by diffusion from the air, under normal conditions, was limited to the out most layer of the skin and did not penetrate beyond the germinal layer.
研究结果表明，在正常生理条件下，皮肤从空气中通过扩散输运所获取的氧仅限于表皮角化层，而不能到达表皮生发层。
The pressure distribution of spherical and cylindrical flow is derived from the diffusion equation, and solutions under three conditions are given.
由扩散方程解出了球形流动与柱形流动的压力分布，确定了三种条件下的解。
The results indicated that under normal industrial conditions, the process is controlled by diffusion of fluid stagnant film.
研究表明，在常用的工业条件下，过程为典型的流体滞流膜扩散控制。
In the second part, under certain deposition conditions, interface diffusion treatments were carried out for nanocrystalline coating sample and the microstructure features are investigated.
在第二部分工作中，我们对一定沉积条件下制备的纳米晶镍镀层样品进行了界面扩散处理并研究了界面的结构特征。
In the second part, a predator-prey model of ordinary differential with one-way diffusion is studied considering the monsoon, river flows, other natural conditions and living habits as background.
第二章以季风、河流流向等自然条件和生物生活习性为背景，建立食饵单向扩散的捕食-被捕食系统的常微分模型。
The molecule flow diffusion equation and the boundary conditions are given. The solution with linear approximation of entrance pressure is presented.
给出了分子流扩散方程的边界条件，推导出入口压力在线性近似下方程的解。
Embedded grids are adopted to weaken the numerical diffusion of the wake and to apply the above boundary conditions.
为减少尾迹数值耗散和便于添加上述边界条件，采用了嵌套网格方法。
One weak wind conditions, surface pollution mainly related to Brownian motion and turbulent diffusion, under strong wind mainly associated with the air drag force.
其中弱风环境下，表面积污主要与布朗运动和湍流扩散相关，强风环境下主要与气流曳力相关。
Based on the moving puff integration model, TSP atmospheric diffusion model in conditions of light air and calm has been derived theoretically by a method of mathematical model analysis.
以移动烟团积分模式为基础，采用数学模型分析法，从理论上导出了小风和静风状态下的TSP大气扩散模式。
The consciousness of such diffusion was awakened after literature was well established. The gradually-developing art of papermaking created the conditions favorable to the diffusion of poetry.
人们的传播意识随着文学地位的确立而觉醒，逐渐发达的造纸术也诗歌传播创造了有利的条件。
The essential conditions for the measurements of diffusion coefficient accurately are also presented.
给出了准确测量扩散系数的必要条件和实验技术。
The necessary and sufficient conditions are discussed on the existence of global solutions for quasilinear reaction-diffusion systems with nonlinear boundary conditions.
讨论一类带有非线性边界条件的拟线性反应扩散方程组，给出了解整体存在的充分必要条件。
This paper studies the blow-up rate for reaction-diffusion systems with nonlinear boundary conditions.
本文考虑带非线性边界条件的反应扩散方程组的爆破速率。
In this paper the global solutions and blow-up problems are studied for the fast-slow diffusion systems with nonlinear boundary conditions.
讨论带有非线性边界条件的快扩散与慢扩散耦合的方程组，给出了解整体存在的充分必要条件。
The adsorption process in the experimental conditions can be considered as external diffusion control.
认为实验条件下的吸附过程属于外扩散控制。
We derive the analytic solution of the non-homogeneous fractional diffusion-wave equation under the mixed boundary conditions using the method of separation of variables.
利用分离变量方法导出了在混合边界条件下的非齐次分数阶扩散-波动方程的解析解。
This modeling system has the same conditions as Gaussian diffusion model, and can calculate any concentration isoline's rigor Tim...
所有公式使用条件与高斯扩散模型相同，可用于直接求取任意浓度等值线精确的时、空位置及其特征点位置。
Objective in the accident conditions, the radioactive particle size and diffusion characteristics and its inhalation risk of plutonium dioxide were further investigated.
目的进一步研究在事故状态下，氧化钚放射性微粒的扩散特征和粒度特征及其吸入危险性。
Objective in the accident conditions, the radioactive particle size and diffusion characteristics and its inhalation risk of plutonium dioxide were further investigated.
目的进一步研究在事故状态下，氧化钚放射性微粒的扩散特征和粒度特征及其吸入危险性。
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