由于汽车尾气排放是最大的污染源之一，提高汽油质量势在必行。
对排放量和控制设备进行评价，以制定新污染源的执行标准。
1·Evaluation of emissions and control equipment for the development of new pollutant source performance standards.
对排放量和控制设备进行评价，以制定新污染源的执行标准。
2·Through the system analysis, it announced APM's character, elements enrichment degree and style of pollutant source of the two sampling sites in Liangxiang of Beijng.
通过对两个地点多组样品的系统分析，揭示了北京良乡两采样点的APM特征、元素富集程度以及两地污染源类型。
3·A landfill is a comprehensive pollutant source, and ln appropriate disposal in a landfill can cause severe problems of environmental engineering geology.
填埋场是一个综合性污染源，若处理不当，会产生严重的环境工程地质问题。
4·Under the circumstance that point source pollution is basically controlled, non point source pollution has already become an important pollutant source.
在点源污染得到初步控制的情况下，非点源污染已经成为水源地的重要污染源。
5·As the automobile exhaust is one of the biggest pollutant source, improving the quality of gasoline is imperative under this situation.
由于汽车尾气排放是最大的污染源之一，提高汽油质量势在必行。