The sets of diffusion equations are presented for reactive pollutant from a time -varied point source and secondary pollutant formed by the transformation.
建立了一个点源排出的活性污染物以及其在大气中化学转化形成的次生物扩散方程。
Under the circumstance that point source pollution is basically controlled, non point source pollution has already become an important pollutant source.
在点源污染得到初步控制的情况下，非点源污染已经成为水源地的重要污染源。
Pollutant output-efficient model as well as others can be employed to estimate the discharges of the pollutants produced by agricultural non-point source.
一般用污染物输出系数模型等估算农业非点源污染物的排放量。
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