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关注：1
2013-05-23 12:21
求翻译：论文以大采高工作面区段煤柱尺寸留设为具体的研究背景是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
论文以大采高工作面区段煤柱尺寸留设为具体的研究背景
问题补充： |
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2013-05-23 12:21:38
Papers to coal mining face with large mining height coal pillar size design for specific research background
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2013-05-23 12:23:18
Thesis paragraph to the Coal Mining District High benches Martin size remain set to specific research background
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2013-05-23 12:24:58
The paper take greatly picks the high working surface sector coal column size to remain supposes as the concrete research background
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2013-05-23 12:26:38
Papers to coal mining face with large mining height coal pillar size design for specific research background
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2013-05-23 12:28:18
Papers to coal mining face with large mining height coal pillar size design for specific research background
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