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关注：1
2013-05-23 12:21
求翻译：东风煤矿倾斜薄煤层工作面控顶设计是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
东风煤矿倾斜薄煤层工作面控顶设计
问题补充： |
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2013-05-23 12:21:38
Dongfeng coal mine inclined thin seam face control top design
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2013-05-23 12:23:18
DONGFENG coal seams sloped face tilt control top design".
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2013-05-23 12:24:58
The east wind coal mine inclines the thin coal bed working surface to control goes against the design
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2013-05-23 12:26:38
Dongfeng coal mine inclined thin seam working face roof control design
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2013-05-23 12:28:18
The east wind coal mine inclines the thin coal bed working surface to control goes against the design
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