Must use solid content filter to remove system of particles of pollutants.
必须采用固体物过滤器除去系统中的颗粒污染物。
The changing law of re-aeration is of great importance for predicting and evaluating the oxygen content in water and the self-purification process of organic pollutants.
水体复氧规律的研究对于预测和评价水中溶解氧含量，确定有机污染水体的自净过程具有重要意义。
Content of air pollutants of leaves of planting trees can show degree of air pollution, ability of remediation, and absorbability of planting trees for air pollutants.
植物叶片内大气污染物含量既可反映大气污染的水平，又可反映植物对大气污染的修复吸滞能力。
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