You then can a multi-group either diffusion equation or solve these types of equations and more rigorously.
然后你有一个多群的或者是扩散等式,或者更严厉地解决这些等式。
I just wanted to remind you, just to clarify what happened at the end, we got the diffusion equation from two bits of information.
我仅仅是想让你们想起来，仅仅是想讲明上次课结束时说了什么，我们从两方面得到了扩散方程。
Let me now try and introduce the Boltzmann equation because it basically gives us a much deeper appreciation than diffusion theory can in terms of what's going on.
我现在尝试介绍波尔兹曼方程，因为它给你们一个比扩散理论，更深刻的理解，在解释，发生的事情方面。
The mass transfer equation was introduced into heat transfer model of falling film evaporation. The radial velocity, mass diffusion coefficient and variation of film thickness were taken into account.
将传质方程引入到垂直管降膜蒸发传热模型中，求解时考虑了径向速度、质量扩散系数和膜厚变化对传热的影响。
Using alternating segment explicit implicit method for the variable coefficient convection diffusion equation. The method has the obvious property of parallelism and is unconditionally stable.
应用交替分段显隐方法求解变系数对流扩散方程，此方法具有很好的并行性且无条件稳定。
In this paper, we proposed a diffusion equation for simulating the problem of pollution, and discussed its application to point pollution, especially while instantaneous point pollution happened.
给出了一个适合于模拟污染问题的扩散方程，讨论了它在点污染，尤其是在瞬时点污染发生时的应用。
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。
The advantages of the diffusion equation feature are gained to discuss the visual process of scarp slope, together with forcasting it's future shape.
我们初步利用扩散方程的这一特性来探讨断层崖坡面演化过程的可视化方法，同时预测其未来的形态。
An algorithm based on the anisotropic diffusion equation is presented to suppress the speckle noise of B-Scan ultrasound image.
提出了一种基于各向异性扩散方程的B超图像斑点噪声抑制的算法。
Empirical equation of single granule collection efficiency by diffusion was obtained based on experiments.
在实验的基础上，得到了计算单个颗粒扩散收集效率的经验方程式。
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。
Numerical resolution of a non-linear diffusion equation was used to fit the experimental data.
浓度剖面的实验数据由非线性扩散方程的数值解进行拟合。
Partial differential diffusion equation is used to remove the noise of medical ultrasonic image.
研究了偏微分扩散方程在医学超声图像去噪中的应用。
For the slow diffusion equation with the source term, we also obtained the finite propagation property of solution.
此外，对于具有源项慢速扩散方程，得到了解的有限传播性质。
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 strict mathematical deduction is conducted under given boundary condition, then the analytical solution of oil droplet's transport and diffusion equation is presented.
在所给定的边界条件下，进行严密的数学推导，给出了油滴输移扩散方程的解析解。
Results showed that the equation optimization was succeeded and the extraction of EGCG complied to diffusion kinetic rules.
结果表明该方程拟合是成功的，EGCG提取符合传质扩散动力学规律。
Using the presented typical optical parameter of human being's forearm tissue, the simulation result of the analysis resolution of the diffusion equation was shown.
利用给定的人体前臂组织的典型光学参数，给出了扩散方程解析解的模拟计算结果。
It is one of the basic problems to study the heat conduction equation (the diffusion equation) using numerical method on unstructured grids.
在非结构化网格中，数值求解标量扩散方程(导热方程)是当今数值计算的基础问题。
The releasing characteristic of soil phosphorus can be exactly depicted by parabolic diffusion equation.
抛物线扩散公式能很好地拟和土壤磷素释放特征。
The transfer equation for dust given in this paper is a equation of two dimensional airflow diffusion transport.
建立的粉尘在巷道中的传递方程是一个二维平流扩散输运方程。
The nucleation of ordered phase is simulated by microscopic diffusion equation and the assumption of classical nucleation theory is examined.
基于微观相场动力学理论建立的微扩散方程，以原子占位几率和序参数描述合金沉淀过程的原子簇聚和有序化。
In this equation, the diffusion is a fractional order derivative of time and space.
在此方程中，弥散项和对时间的导数为分数阶导数所代替。
The microscopic lattice kinetic model of aging process was build, using the coupling of the theory of microscopic elastic energy and microscopic diffusion equation.
将微观弹性应变能理论和微观扩散方程相耦合，建立起时效过程微观晶格动力学模型。
The diffusion speed of the equation is determined based on the fringe density.
在该方法中，方程的演化速度是由条纹的密度决定的。
A dynamic equation of plasma density is constructed about ionization, recombination, diffusion and plasma flow which is produced by inhomogeneous pressure.
考虑等离子体中存在电离和复合这两种互逆过程及扩散和压力不均匀引起的等离子体流动，建立密度动力学方程。
The model consists of a single advection? Diffusion equation with a source term.
此模型由一个单一的具有源项的对流扩散方程组成。
Finally, through an example of a drift and diffusion equation with steep distribution, the feasibility and effectivity of this algorithm are proved.
最后通过对一个存在陡峭层分布的漂移扩散方程进行求解的实例，验证了算法的可行性和有效性。
A numerical method for the IBV problems of the nonlinear reaction-diffusion equation was described.
本文讨论了求非线性反应—扩散方程初边值问题数值解的一种方法。
A numerical method for the IBV problems of the nonlinear reaction-diffusion equation was described.
本文讨论了求非线性反应—扩散方程初边值问题数值解的一种方法。
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