发现污染物在土壤中的质量浓度分布与渗流速度、作用时间、扩散系数等有关。
The results showed that the intensity distribution had relation with the velocity of percolation, time, coefficient of convection and diffusion.
从煤层甲烷产出机理入手，分析了影响煤层甲烷解吸、扩散和渗流过程的因素。
Starting with the mechanism of CBM production, this paper analyzes the factors that affect the processes of coalbed methane desorption, diffusion and percolation from coal seams.
讨论具有一般形式的对流项、扩散项、边界流项以及反应项的一维牛顿渗流方程初边值问题非负解的整体存在性。
The present paper studied the global existence of nonnegative solutions of one-dimensional Newtonian filtration equation with more general boundary fluxes term, reaction, diffusion and convection.
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