各污染物的日变化有明显的变化规律。

The daily variation of air pollutant is obvious.

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影响各污染物去除效果因素的主次为，水力负荷周期、EM投加量，土层厚度。

The influence factors for removal efficiency sorting by priority are hydraulic loading period, the appending quantity of EM rejuvenation, soil depth.

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在蒸汽动力系统运行的研究中引入了污染物排放问题，并建立了各污染物的数学模型。

Pollutants emission effects have been especially considered in the study on steam power system economic operation, and accordingly, mathematic models are recommended for pollutants emission.

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