Song Xuanmin, Jin Zhongming and Wei Jinping, Study on coal-rock moving law and its control for longwall top-coal caving face, Proceedings of 99 International Workshop on Underground Thick-seam Mining, Beijing, China , October 1999
Email:ywgxsys@163.com 电话:86-351-6014063 地址: 山西省太原市新矿院路18号 邮编:030024
Copyright © 太原理工大学