... cycle of nitrogen 氮循环 cycle of pollutants 污染物的循环 cycle of river erosion 河蚀循环 ...
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geological cycle of pollutants 污染物的地质大循环
biogeochemical cycle of pollutants 污染物的生物地球化学循环 ; 污染物生物地球化学循环
cycle e of pollutants 污染物的循环
Through the study we take that the environmental impact load of coal is bigger than oil, that is the environmental impact of released pollutants of coal entire life cycle process is more serious.
通过研究得出燃料煤的年环境影响负荷大于燃料油，即煤的整个生命周期过程中向环境释放的污染物影响比较严重。
The cycle sludge was pumped to chemical biological flocculation tank and the pollutants were removed by co-operation of chemical coagulation and biological adsorption.
该工艺在传统的化学混凝的基础上将沉淀池内的污泥回流至化学生物絮凝池，利用化学混凝和污泥吸附的协同作用去除污水中的污染物。
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