ambient air level环境空气级; 周围空气水平 ambient air monitor 环境空气监测器; 环境空气监测仪
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?周围空气水平
周围空气水平，环境空气水平：ambient air level 周围介质污染，环境污染：environmental contamination ..
双语例句
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Analyze the main index, which include API, primary pollutant, air quality level, in 86 cities of china from Urban AmbientAir Quality Daily Report of 2006.