The transformation regularity of chemical pesticide in soil was analyzed. It was important to predict its change tendency and control pesticide environmental pollution.

阐述了化学农药在土壤中的迁移转化规律，对于预测其变化趋势和控制农药环境污染具有重大意义。

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Our agitators are used in all important branches of industry: chemical, pharmaceutical, print and lacquer, food and beverage, pollution control and waste water treatment.

我们的搅拌设备应用于各种重要工业如：化工，医药，印刷，油漆制造，食品，污染控制，和废水处理等。

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The paper mainly describes the causes of indoor air chemical pollution and how to control it.

本文主要论述了室内空气化学性污染的成因以及如何控制污染的具体措施。

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Yet 82 percent of teens and 76 percent of boomers think government leaders should do more to control pollution from the oil and chemical industries, even if that increases the price of gas and oil.

CNN: Kids on mountain