Isbn: 9787811078619 - 掘进工 (1 risultati)

paperback. Condizione: New. Ship out in 2 business day, And Fast shipping, Free Tracking number will be provided after the shipment.Paperback. Pub Date :2008-06-01 Pages: 305 Language: Chinese Publisher: one for the national mine safety training for small and medium textbooks : Excavation work for small and medium coal mine safety training textbooks . mainly China University of Mining Press tells the story of coal mine production safety laws and regulations . coal production technology. drilling and blasting safety . roadway excavation and roof management . disaster prevention and mine ventilation . electrical and mechani.Four Satisfaction guaranteed,or money back.…