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求教! 国家环境空气二级标准浓度限值? [Copy link] 中文

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Post time 2004-9-26 09:42:50 |Display all floors
国家环境空气二级标准浓度限值?
怎么说?多谢!

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pauling has been deleted
Post time 2004-9-26 11:26:33 |Display all floors

try to translate the sentence

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Rank: 6Rank: 6

Post time 2004-9-26 18:03:56 |Display all floors

JFYR

国家环境空气二级标准浓度限值
grade 2 threshold of (national) Air Quality Criterion on pollutant density

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Post time 2004-9-26 21:48:25 |Display all floors

hhh

环境空气质量标准
Ambient air quality standard
二级标准浓度限值
grade 2 maximum admissible concentration

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