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关注：1
2013-05-23 12:21
求翻译：煤矿瓦斯重大灾害防治技术取得突破是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
煤矿瓦斯重大灾害防治技术取得突破
问题补充： |
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2013-05-23 12:21:38
Coal mine gas control technology breakthrough of major disasters
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2013-05-23 12:23:18
Coal Mine major disaster prevention technology breakthrough
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2013-05-23 12:24:58
The coal mine gas significant disaster prevents and controls the technology to obtain the breakthrough
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2013-05-23 12:26:38
Major disasters of coal mine gas prevention and control technology breakthroughs
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2013-05-23 12:28:18
Prevent and cure the technology and make the break-through in great calamity of the gas of the colliery
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