Each pollution index can reach the air environment quality level-2 standard (GB3095 -1996).

各污染指标可满足环境空气质量(GB3095—1996)中二级标准。

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Each pollution index can reach the air environment quality level-2 standard (GB3095 -1996).

各污染指标可满足环境空气质量(GB3095—1996)中二级标准。

youdao