The analysis of surface effect is based on defect reaction and diffusion theory, the study for surface effect will have good guidance to the improvement of electrical properties.

利用缺陷反应和扩散原理对表面层效应进行了初步分析，指出表面层效应的研究对改善和调节材料的电学性能具有重要的指导意义。

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The fire was modeled by the mixture fraction combustion method with chemical reaction mechanisms neglected. Laminar diffusion flame theory with one-step irreversible fast reactions is assumed.

对火的描述采用混合分数燃烧模型，模型中忽略燃烧过程中的反应机理，应用了层流扩散火焰理论和单步不可逆快速反应假定。

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In this paper we study the asymptotic property of solutions of a class of reaction-diffusion systems including those appearing in the theory of epidemics and combustion.

本文讨论了一类反应扩散方程组解的渐近性质。这类方程组包括传染病理论和燃烧理论中出现的一类方程。

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