厚煤层综放工作面区段煤柱合理宽度的确定
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1008-8881|30|2|19-21
ISSN: 1008-8881
Source: 山西能源学院学报, Vol.30, Iss.2, 2017-01, pp. : 19-21
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Abstract