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關注：1
2013-05-23 12:21
求翻譯：華北地區既有建筑供暖系統節能改造研究是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
華北地區既有建筑供暖系統節能改造研究
問題補充： |
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2013-05-23 12:21:38
North China's energy-saving heating systems of existing buildings of
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2013-05-23 12:23:18
Both areas of north China Building heating system can transform research section
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2013-05-23 12:24:58
The North China area already has the construction heating system energy conservation transformation research
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2013-05-23 12:26:38
Study on energy saving renovation of existing buildings heating system in North China
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2013-05-23 12:28:18
North China has already had heating system reducing energy consumption of buildings that is studied
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