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关注：1
2013-05-23 12:21
求翻译：关键词：液压伞钻；立井井筒；硬岩；液压站；钻爆法是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
关键词：液压伞钻；立井井筒；硬岩；液压站；钻爆法
问题补充： |
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2013-05-23 12:21:38
Keywords: hydraulic drill umbrella; shaft; hard rock; hydraulic station; drill and blast method
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2013-05-23 12:23:18
Keywords: hydraulic umbrella; vertical shaft drilled wellbore; Hard Rock; hydraulic station; diamond explosive
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2013-05-23 12:24:58
Key word: The hydraulic pressure umbrella drills; Vertical shaft well chamber; Hard crag; Hydraulic pressure station; Drills explodes the law
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2013-05-23 12:26:38
Keywords: hydraulic drill; vertical shaft; hard rock; hydraulic station; by drill-blasting method
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