“Y”型通风工作面近距离煤层群开采瓦斯综合治理

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1004-5856|37|2|21-23

ISSN: 1004-5856

Source: 哈尔滨学院学报, Vol.37, Iss.2, 2016-01, pp. : 21-23

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Abstract