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Base on the turbulent shoot non-premixed combustion of methane/air, make a coordinate transform on flame for reactive scalar equation, build laminar flamelet model for two dimension steady state non-premixed turbulent reacting flows.

以甲烷/空气的湍流射流扩散燃烧为基础,对通用的反应标量方程在火焰面上进行坐标变换,建立二维稳态湍流扩散火焰的小火焰模型。

And then, the direct boundary integral equation of convection-diffusion was obtained by using inverse transformation, which is a discrete by using constant elements.

然后,通过逆变换推导出对流扩散方程的直接边界积分方程和解的积分表达式,并采用常单元来离散边界积分方程,完成对流扩散方程的求解。

The forward finite difference and Newton iterance are used in the light of box model and other heavy gas dispersion models, such as IIT Heavy Gas Models and virtual point source model, to solve the differential equations of controlling heavy gas cl.

文中从控制重气云团扩散行为的微分方程入手,根据箱模型及其他一些重气扩散模型,如IITHeavyGasModels模型和虚点源模型,采用向前插分和牛顿迭代的方法,针对ThorneyIslandTrialNo 。0 0 8试验进行了数值模拟,得到了重气云团外形尺寸和空气卷吸量随时间的变化关系以及下风向固定点处地面最大浓度值。

This is 1 the firstsharp uniform convergence result for linear transport equations in di?usive regime, aproblem that involves both transport and di?usive scales; and 2 the first uniform con-vergence valid up to the boundary even if the boundary layers exist.

这是对线性输运方程已知的第一个在扩散域中和输运扩散同时存在时具有高阶一致收敛性的算法,同时也是第一个一致收敛性在边界层也成立的算法。

They can be obtaine from m which isthe size of W and maximin an minimin of observed data of W simply and conveniently.

本文第三章图4.3显示,利用正态扩散方式对非完备知识样本的样点信息扩散处理以达到更好的概率密度之估计是可行的。

Local polynomial estimation method is a kind of a nonparametric estimation methods which are based on data-analytic approaches.

我们提出了时齐的扩散过程的漂移项和扩散项的局部多项式估计。

The experimental results indicate a luminescence enhancement effect of hydrogen by passivating certain defects in GaN. However, such effect must be realized by overcoming high migration barrier in GaN. In the experiments, low energy electron beam supports enough energy to hydrogen to diffuse and passivate defects in GaN.

研究表明氢原子在GaN中可以钝化缺陷来增强发光,但这种钝化缺陷的作用必须通过克服高的扩散势垒来实现,而低能电子束可以提供足够的能量使得氢原子克服扩散势垒来实现钝化作用。

We studied its distribution pattem by using the following measures f the test for fitting to the poisson , negative binomial and neyman a distribution . at the same time , we use negative binomial parametef , dispersal index , patchiness index , cassie s index and clumping index , estimated the aggregation intensity . the results showed that the distribution pattern is typically aggregated , and the intensity of aggregation vari

经统计分析,青岛百合复合种群、各局部种群内个体的分布格局离散分布拟合的结果符合负二项分布;各聚集强度参数中,丛生指标)和 cassie 指标均大于o ,负h项参数限)均较小,扩散系数k卜扩散型指数)和聚块性指标均大于1 ,以上这些表明各个局部种群的分布格局都为聚集分布。

The self-diffusion coefficients of supercritical carbon dioxide and infinite dilute diffusion coefficients of methanol and ethanol in supercritical carbon dioxide were investigated by molecular dynamics simulation.

采用分子动力学模拟的方法对超临界二氧化碳的自扩散系数及甲醇和乙醇在超临界二氧化破中的无限稀释扩散系数进行了模拟计算。

Such a conclusion can be shown that;(1). Having high relativity between the numerical modeling results and experimental curves ensures the simultaneousness of modeling internal moisture distribution and the unsteady drying process.(2). High non-homogeneity and unsteadiness in the seed drying process.

通过边界条件的处理把反映物料干燥过程动态特性的实验含水率曲线与物料颗粒内部水分扩散有机地结合起来;提出了一种较准确地确定物料颗粒在非稳态脱水过程中内部水分扩散系数和分析内部水分分布及其动态特性的方法。

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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。

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我比喻得过头了。