作业帮英语翻译我们老师布置的一个活动,救命
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英语翻译我们老师布置的一个活动,救命
英语翻译
我们老师布置的一个活动,救命
英语翻译我们老师布置的一个活动,救命
土壤污染大致可分为无机污染物和有机污染物两大类.无机污染物主要包括酸、碱、重金属,盐类、放射性元素铯、锶的化合物、含砷、硒、氟的化合物等.有机污染物主要包括有机农药、酚类、氰化物、石油、合成洗涤剂、3,4-苯并芘以及由城市污水、污泥及厩肥带来的有害微生物等.当土壤中含有害物质过多,超过土壤的自净能力,就会引起土壤的组成、结构和功能发生变化,微生物活动受到抑制,有害物质或其分解产物在土壤中逐渐积累通过“土壤→植物→人体”,或通过“土壤→水→人体” 间接被人体吸收,达到危害人体健康的程度,就是土壤污染.
Soil pollution can be roughly divided into inorganic pollutants and organic pollutants two kinds big. Inorganic pollutants mainly including acid, alkali, heavy metal, salt, radioactive elements of strontium cs, compound, containing arsenic, selenium, fluorine compounds, etc. Organic pollutant mainly including organic pesticides, phenols, cyanide, oil, synthetic detergents, 3, benzopyrene and by city sewage and sludge and manure bring harmful microbes, etc. When the soil containing harmful material too much, more than the soil self-purification capability, it would cause soil composition, structure and function changes, the microbial activity is restrained, harmful substances or its breakdown products in soil accumulated gradually through the "soil and plants to human body", or through the "soil, water and human body" indirect absorbed by human body, to the extent of the harm human body health, is soil pollution.