Isbn: 9787564641276 - 厚煤层综采工作面空巷综合治理技术及应用 (1 resultados)

paperback. Condición: New. Paperback. Pub Date: 2018-09-01 Pages: 170 Language: Chinese Publisher: Publishing House empty tunnel fully mechanized mining face in thick seam comprehensive control technology and applications. the main content of China University of Mining and including at home and abroad over the face of traditional mechanized mining Research Status empty roadway and new Across the Hollow Drift. classification empty roadway in thick seams and treatment. the same kind of material .…