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.
空气污染预报属于正问题，而从污染物浓度来求解扩散系数则属于反问题。
Air pollution prediction is a direct problem, and deriving diffusion coefficients from the concentration of pollutants is an inverse problem.
空气污染预报属于正问题，而从污染物浓度来求解扩散系数则属于反问题。
Air pollution prediction is a direct problem, and deriving diffusion coefficients from the concentration of pollutants is an inverse problem.
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