Citation: | ZHANG Aoxiang, CAO Daiyong, WEI Yingchun, SONG Yang, ZHANG Xiaoyu. Gray correlation analysis between pulverized coal concentration and geological factors of CBM wells[J]. COAL GEOLOGY & EXPLORATION, 2016, 44(5): 76-79. DOI: 10.3969/j.issn.1001-1986.2016.05.014 |