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.
采用对流扩散方程并且考虑渗流作用的影响，研究了缓流水体底泥污染物对周围土层的影响。
This article studied the convection and diffusion of polluted materials in soil using convection and diffusion equation considering the effect of percolation.
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