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关注：1
2013-05-23 12:21
求翻译：Papers of the research results to Changping coal mine working face with large mining height and rational coal pillar size design provides the theoretical basis and test basis, and under similar conditions of coal pillar size design has the certain reference value for reference是什么意思？ 待解决
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Papers of the research results to Changping coal mine working face with large mining height and rational coal pillar size design provides the theoretical basis and test basis, and under similar conditions of coal pillar size design has the certain reference value for reference
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2013-05-23 12:21:38
Papers of the research results to Changping coal mine working face with large mining height and rational coal pillar size design provides the theoretical basis and test basis, and under similar conditions of coal pillar size design has the certain reference value for reference
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2013-05-23 12:23:18
The results of research to Papers Changping coal mine face working with large coal mining pillar size height and rational design provides the theoretical basis and test basis under similar conditions, and size of coal pillar design has certain reference value for the reference
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2013-05-23 12:24:58
Papers of the research results to Changping coal mine working face with large mining height and rational coal pillar size design provides the theoretical basis and test basis, and under similar conditions of coal pillar size design has the certain reference value for reference
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2013-05-23 12:26:38
Papers of the research results to Changping coal mine working face with large mining height and rational coal pillar size design provides the theoretical basis and test basis, and under similar conditions of coal pillar size design has the certain reference value for reference
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2013-05-23 12:28:18
Papers of the research results to Changping coal mine working face with large mining height and rational coal pillar size design provides the theoretical basis and test basis, and under similar conditions of coal pillar size design has the certain reference value for reference
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