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关注：1
2013-05-23 12:21
求翻译：同时能够指导矿井的安全高效开采是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
同时能够指导矿井的安全高效开采
问题补充： |
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2013-05-23 12:21:38
At the same time be able to guide the safe and efficient exploitation of mine
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2013-05-23 12:23:18
While able to guide the safe and efficient coal mining
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2013-05-23 12:24:58
Simultaneously can instruct the mine pit security highly effective mining
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2013-05-23 12:26:38
At the same time to guide mine safety and high efficiency mining
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2013-05-23 12:28:18
正在翻译，请等待...
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