作者单位:ZHOU Ting-yang,YOU Wen-shun,LIU Zhong-quan,WANG Bing-shan(Coal Production Department of Shenhua Group,Beijing 100011,China)周廷扬,尤文顺,刘忠全,王冰山(神华集团有限责任公司煤炭生产部,北京100011)
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