扩散

Any high Re number flow over bodies consists of three basic flows: the flow with convection-dominant in all spatial directions, the flow with convection-diffusion competition in all directions and the flow with convection-dominant in part directions and convection-diffusion competition in part directions, which is called the interacting shear flow; the features of the three basic flows are different; their simplest conservation equations, i.e. the Euler equations, Navier-Stokes equations and diffusion parabolized NS equations, have different mathematical characteristics; there is a great disparity in domains of the three basic flows and the domains of NS equations are very small. Therefore, adopting Euler-DPNS-NS equation system to analyze and compute high Re number flows over bodies is a logical approach. There exists a mutual examined-complemented relationship of this approach with the usual one of adopting only NS equations.

主要内容如下：（1）高Re数绕流包含3种基本流动：所有方向对流占优流动、所有方向对流扩散竞争流动和部分方向对流占优部分方向对流扩散竞争流动，3个基本流动的特征彼此不同且在流场中所占领域大小彼此相差悬殊，NS方程区域很小，它们的最简单控制方程组Euler、Navier-Stokes和扩散抛物化NS方程组的数学性质彼此不同，因此利用Euler-DPNS-NS方程组体系分析计算高Re数绕流流动就是一个合乎逻辑的选择，该法与利用单一NS方程组的常用方法可以彼此检验和补充。

Among the changes: creating more sub-stages for tumor size, reassigning some large tumors to a more advanced stage, reclassifying tumors that have spread into the fluid surrounding the lung, and recognizing that spread to certain lymph nodes is more dangerous than its spread to others.

方案变动包括，对肿瘤体积进一步分级，将一些大型肿瘤列入晚期，对已扩散到肺部周围液体的肿瘤重新分类，并认定肿瘤扩散至某些特定淋巴结比扩散至其他淋巴结更危险。

The paper gives a point-source pollution example of deleterious gas—SO2 and NO2 sluiced by a smokestack in a factory,collects observation concentration of SO2 and NO2,based on GIS and gauss math-model,researches the diffuseness pattern in the special weather-condition,realizes the visualization of deleterious gas—SO2 and NO2 diffuseness,probes a new way and method for natural environment evaluation.

本文以某工厂烟窗有害污染气体SO2和NO2排放为例，基于GIS技术进行模型建立和浓度扩散预测模拟，实现污染物扩散的可视化表达，探索有害气体扩散模拟的新方法和新途径，对于有效地进行有害气体排放控

Tiffs endogenous fluorescent protein possesses many advantages and facilities as fluorescent tag instead of exogenous dyes in fresh cell studies.

实验表明，EGFP分子可以通过核孔在核质间被动扩散，但扩散速度远低于在核内或质内的速度，没有证据表明EGFP可以在细胞问扩散。

Meanwhile, by modeling the sewage diffusion, it is found that the range of the Changjiang Estuary sewage diffusion area can reach the East Chongming Bank, the Deep water Channel, and the Nanhui Bank, while the COD concentration near Meimaosha is especially high so that the sewage diffusion constitutes a threat to the water quality of Meimaosha area.

同时，通过对污染物扩散的数值模拟，本文发现长江口污染物的扩散范围能够到达崇明东滩、深水航道和南汇边滩，而没冒沙附近区域的COD浓度更是尤其地高，所以污染物扩散对没冒沙地区的水质也形成了一定的威胁。

The results show that, by plane spacing of holes in the distribution of gas diffusion layer of the fuel cell components, the performance of the higher than normal diffusion layer components battery performance because of the plane hole spacing distribution of the gas diffusion layer can improve the adoption of its liquid water, and improve the passage of air, thereby improving battery performance.

结果表明，由平面内孔隙率间隔分布的气体扩散层组成的燃料电池，其性能高于由普通扩散层组成电池的性能，因为平面内孔隙率间隔分布的气体扩散层都能够提高其液态水的通过能力，提高气体的通过能力，从而提高电池的性能。

A drain diffusion layer connected to an output end of the internal circuit is formed in one of two diffusion regions of the surface of the semiconductor substrate that are defined by the gate electrode, and a source diffusion layer grounded is formed in the other region.

与内电路输出端相连的漏扩散层形成在由栅电极确定的半导体基片表面的两扩散区之一的区内，而接地的源扩散层形成在另一区内。

Secondly, this paper set up the diffusion model of innovation incorporating price, advertising and distribution, and given the optimal diffusion equation and characterized qualitatively optimum price, advertising and distribution. Furthermore, it studied the ratio relations among the advertising elasticity of demand and the price elasticity of demand and the distribution elasticity of demand. Finally studied the influence of marketing mix variables to the technology diffusion.

然后建立了含商品定价、广告费用和销售费用等的技术创新扩散模型，给出了扩散最优方程和商品价格、广告费用和销售费用的最优曲线，进一步地，本文分析了广告费用对需求的弹性、商品定价对需求的弹性以及销售费用对需求的弹性之间的比例关系，探讨了这些外部市场变量对创新扩散的影响。

Such system is n species SKT model including the effects of diffusions, self-diffusions as well as cross-diffusions.

这类系统是同时考虑了扩散、自扩散和交错扩散作用的n种群SKT模型。

A model is proposed that the tunnel growth is controlled by the diffusions of Al(superscript 3+) both in the surface layer close to Al foil and in the tunnels within Al foil.

提出隧道孔的生长受Al(上标 3+)在隧道孔中的扩散和铝箔表面扩散层中的扩散共同控制，可以对上述因素的影响规律做出更合理的解释。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失