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关注：1
2013-05-23 12:21
求翻译：63.5%的城市二氧化硫年平均浓度超过国家二级标准。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
63.5%的城市二氧化硫年平均浓度超过国家二级标准。
问题补充： |
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2013-05-23 12:21:38
63.5% of the city than the national average concentration of sulfur dioxide secondary standard.
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2013-05-23 12:23:18
63.5 % on average in the city 2 sulfur dioxide concentrations over national level 2 standard.
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2013-05-23 12:24:58
63.5% city sulphur dioxide annual mean density surpasses the national two levels of standards.
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2013-05-23 12:26:38
63.5% urban annual average concentration of sulfur dioxide over national secondary standard.
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2013-05-23 12:28:18
63.5% of the density of annual mean of urban sulfur dioxide exceeds the national grade - two standard.
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