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关注：1
2013-05-23 12:21
求翻译：引进完善井下作业地面配套施工工具及井下管柱配套工具是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
引进完善井下作业地面配套施工工具及井下管柱配套工具
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2013-05-23 12:21:38
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2013-05-23 12:23:18
Perfect introduction silo operation ground supporting construction tools and downhole pipe columns supporting tools
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2013-05-23 12:24:58
Introduction consummation mine shaft work ground necessary construction tool and mine shaft tube column necessary tool
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2013-05-23 12:26:38
Introduction of improving underground working surface auxiliary construction tools and downhole string matching tool
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2013-05-23 12:28:18
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