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关注：1
2013-05-23 12:21
求翻译：埋地钢质管道三层聚乙烯防腐层剥离原因和危害分析是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
埋地钢质管道三层聚乙烯防腐层剥离原因和危害分析
问题补充： |
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2013-05-23 12:21:38
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2013-05-23 12:23:18
3 floors underground steel pipelines polyethylene corrosion protective Layer peeling causes and hazard analysis
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2013-05-23 12:24:58
Buries the steel pipeline three polyethylene anticorrosion level peeling reason and the harm analysis
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2013-05-23 12:26:38
Three-layer polyethylene coating of buried steel pipeline peeling reasons and hazard analysis
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2013-05-23 12:28:18
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