And, I'm going to have to explain to you, where does it come from? OK, but before I do that, well, let me point out actually that the equation is not just the diffusion equation.
给你们解释一下，这个从哪儿来？，在我解释之前，告诉大家，这个方程不只是扩散方程。
Diffusion is when you have a fluid in which you are introducing some substance, and you want to figure out how that thing is going to spread out, the technical term is diffuse, into the ambient fluid.
扩散就是，当在某液体中加入某物质时，想算出该物质怎样在周围的液体中散开，专业术语叫做扩散。
Countries with policies preventing their diffusion lost out.
用政策来防止信息技术扩散的国家只有死路一条。
At the same time, carbon dioxide is removed from the blood through the same process of diffusion. This waste gas is expelled as we breathe out.
同时，血液中的二氧化碳经过同一个扩散过程被排除，并随着我们的呼气而排出体外。
Based on mechanism of human sight, the facula diffusion method is advanced to detect individual cross-sections in the image and takes out the contours of them.
在人眼视觉机理的基础上，提出光斑扩散方法，用来探测图像中各个纤维截面并得到其轮廓线。
The research on diffusion loss of axial-flow fan's diffuser is carried out using theory calculation method and FLUENT software.
利用理论计算方法以及FLUENT软件对轴流通风机扩散筒的扩散损失进行了研究。
An experimental study has been carried out on the doping of polysilicon by ion implantation and diffusion for the preparation of shallow junctions.
本文对多晶硅膜离子注入掺杂和扩散掺杂制备浅发射结进行了实验研究。
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。
As the realistic image comes out and rises to a higher level, the ideological sense elevates to a strange space along with thought's diffusion.
在此岸形象浮出水面并得以深化的同时，彼岸意义也随着思维的扩散趋向于异样的空间。
Objective: To find out the relationship of the hyaluronic acid (HA) overexpression in peritoneal fluid in patients with the gastric cancer and the invasion or diffusion of the cancer.
目的：检测胃癌患者腹腔液中透明质酸（HA）水平及其与胃癌侵袭、扩散之间的关系。
This paper provides an equation to estimate the chloride diffusion coefficient from concrete mixture proportions, points out the problems in applications and discusses some influential factors.
介绍了一种由混凝土组成材料预测其氯离子扩散系数的经验计算公式，指出应用中注意的问题，并讨论了主要影响因素。
In this paper, finite bulk-finite element means is presented for solving convection-diffusion problem, moreover give out the stability analysis.
将有限体积和有限元方法相结合，解决对流扩散方程问题，并给出了稳定性分析。
This paper describes the mechanism, characteristics and applications of field diffusion connection. It is pointed out that the presence of residual stress can affect the bonding quality.
简要介绍了场致扩散连接的机理、特点及应用，指出了残余应力的存在对键合质量的影响。
By comparison with the experimental results, a primary numerical calculation was carried out, for which gas diffusion moves around a building when poisonous gas leakage occurred.
在与实验结果对比的基础上，对某建筑小区环境下有害气体连续泄出的扩散迁移过程进行了初步数值计算。
Berndt, 2003. Gertler 2001 points out that systematic influences of institutions prevent the diffusion of universal operational standards at a global scale.
Gertler指出制度的系统影响阻止了全球尺度的普通运作标准的扩散。
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。
A kind of rebuilding gaseous diffusion separation process into Jet Membrane process is explained and it is pointed out that this kind of technique reform might reduce the cost of enriched uranium pe…
本文就扩散分离机器改装为射膜分离机器作了说明，并认为这种改装是减低比能耗、增加单机分离功率可供选择的一种技术改造。
The experimental study of a gas solid flow pattern and gas diffusion characteristics using polystyol particles and glass bead has been carried out in a pressurized spouted fluidized bed.
在一个加压喷动流化床装置上进行了冷态实验，研究加压条件下床中的气固流动状态和气体在各部分的扩散特性。
The trend of development in computational intelligence is pointed out, which is of great significance to the diffusion and application of the methods in computational intelligence.
最后指出了智能计算方法的发展趋势，对智能计算方法的推广应用具有重要意义。
Some possible interpretations are presented for out-diffusion of hydrogen in the films.
最后对氢的外扩散现象提出了几种可能的简单解释。
METHODS: the pathogenic bacteria strains isolated by the clinical laboratory of out hospital in 2005 were collected. The drug sensitivity test was conducted with slip diffusion method.
方法收集2005年我院检验科分离出的病原菌菌株，采用纸片扩散法进行药物敏感性试验。
Based on the diffusion control model and reaction kinetics control model, the burning out time of volatile is calculated respectively.
在扩散控制、动力控制条件下，分别对蔗糠挥发分燃烬时间进行了计算。
A technical concept, "reverse source quantity", based on artificial neural network, has been pointed out in order to carry out a numerical dynamic simulation on hydrocarbon diffusion process.
前言：提出实现烃类重气泄散态势的动态过程数值预测新构想———基于人工神经网络的“反求源”技术。
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。
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。
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