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Layer-crossing drill hole arrangement method for lower protective layer of long-distance coal seam
JIANG ZHONGYANG, XIN YAJUN, LEI YUN, LI GUANGZENG, LIAN HONGQUAN, YANG JUNPENG, GAO ZHONGGUO, MENG FANCHAO, ZHANG SHAOJIE, LIU YONG
Year of Publication 11.10.2022
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Year of Publication 11.10.2022
Patent