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关注：1
2013-05-23 12:21
求翻译：透水，火灾，瓦斯，顶板，煤尘合称为煤矿五大灾害。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
透水，火灾，瓦斯，顶板，煤尘合称为煤矿五大灾害。
问题补充： |
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2013-05-23 12:21:38
Flooding, fire, gas, roof, collectively known as the coal dust five disasters.
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2013-05-23 12:23:18
正在翻译，请等待...
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2013-05-23 12:24:58
The water percolation, the fire, the gas, the roof, the coal dust hecheng is the coal mine five huge disasters.
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2013-05-23 12:26:38
Flooding, fire, gas, roof, coal dust known as the five major disasters in coal mines.
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2013-05-23 12:28:18
正在翻译，请等待...
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