air pollution index system
311] 《空气污染管制（指明工序）（所需详情及资料的指明）令》〔第311章〕 air pollution index system 空气污染指数制度 air pollution level 空气污染水平 ..
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air pollution index system
空气污染指数系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The grey system assessment method, air pollution integrated index are applied to evaluate the atmosphere, surface water, noise environmental quality of valley cities in western China.
本文首先采用灰色系统评价方法、空气污染综合指数等方法对中国西部河谷型城市大气、地表水、噪声环境质量进行了客观评价。
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Its report grades cities using, in part, the EPA's color-coded Air Quality Index, as well as its own weighting system that ranks the severity of pollution on a daily basis.
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