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ISBN 10: 7502060790ISBN 13: 9787502060794
Seller: liu xing, Nanjing JiangSu, JS, China
Book
paperback. Condition: New. Paperback. Pub Date: 2017-11-01 Pages: 151 Language: Chinese Publisher: coal industry publishing house in the study of large mining height are broken strata movement regularity of fully mechanized working face with large mining height are broken once mining overall height face moving regularity of underground pressure in the system research. the main contents include: large mining height are broken open mining of fully mechanized working face pressure research status and development trends fo.