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。
The transformation of coal-fired boiler reduce the pollutant emissions, and cut down the atmospheric pollution, improve the condition of the air quality in Lanzhou City.
通过燃气替代燃煤，可以减少污染物的排放，改善兰州市空气质量状况。
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