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关注：1
2013-05-23 12:21
求翻译：小屯煤矿底抽巷穿层钻孔抽放效果研究是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
小屯煤矿底抽巷穿层钻孔抽放效果研究
问题补充： |
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2013-05-23 12:21:38
Xiaotun wear layer of coal at the end pumping Lane Effect of drainage holes
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2013-05-23 12:23:18
Small Tuen coal mine at its root alley wearing a layer bored random effect research
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2013-05-23 12:24:58
The small village coal mine bottom pulls out the lane to put on the level drill hole to pull out puts the effect research
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2013-05-23 12:26:38
Small coal mine drainage roadway crossing layer gas drainage from the end effect
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2013-05-23 12:28:18
Small coal mine drainage roadway crossing layer gas drainage from the end effect
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