engine pollution and its toxicity 动机排放的污染物
Studies on alga pollution and its toxicity of municipal water supplies.
某市供水藻类污染及其毒性研究。
The article discusses on the relationship of environmental lead pollution and health, which covers pollutant sources, toxicity hazard and analysis method.
本文论述了环境铅污染与健康，包括污染物的来源、毒性危害和分析方法。
The study on elemental speciation in airborne particulate matter (PM) is important for its evaluation of toxicity and source of pollution.
大气颗粒物中元素的种态研究，对评价其毒性和污染来源等有很重要的意义。
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