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关注：1
2013-05-23 12:21
求翻译：通过污水处理厂升级改造，提高生活源氨氮去除效率，是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
通过污水处理厂升级改造，提高生活源氨氮去除效率，
问题补充： |
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2013-05-23 12:21:38
By upgrading sewage treatment plants, improving the sources of ammonia-nitrogen removal efficiency of life,
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2013-05-23 12:23:18
upgrading through sewage treatment plants, and improve the living source ammonia nitrogen removal efficiency.
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2013-05-23 12:24:58
Through the sewage treatment plant promotion transformation, enhances the life source ammonia nitrogen elimination efficiency,
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2013-05-23 12:26:38
By upgrading sewage treatment plants, improving the sources of ammonia-nitrogen removal efficiency of life,
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2013-05-23 12:28:18
By upgrading sewage treatment plants, improving the sources of ammonia-nitrogen removal efficiency of life,
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