污染水平 meaning in English

contamination level
pollution level

There is an association between airquality levels and the incidence of pulmonary disease in the world's cities .
在世界大城市中，空气污染水平和肺病发病次数之间存在着某种关系。
Advice to public at different levels of air pollution
在不同的空气污染水平下对市民的忠告
Determination of afiatoxins and fumonisins in the corn and peanut on sale
玉米中黄曲霉毒素与伏马菌素污染水平调查
Study on lead pollution and the related factors in crops on the highway - sides
公路边农作物铅污染水平与相关因素研究
Air pollution level
空气污染水平

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