Language:Chinese.Soft cover.description:Paperback Pages Number: 292 small and medium-sized coal mine safety training textbooks for mine mechanical and electrical maintenance man introduces mine safety and production policies and laws and regulations. the basis of knowledge of coal produc
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Vendeur : liu xing, Nanjing, JS, Chine
paperback. Etat : New. Language:Chinese.Paperback Pages Number: 292 small and medium-sized coal mine safety training textbooks for mine mechanical and electrical maintenance man introduces mine safety and production policies and laws and regulations. the basis of knowledge of coal production. mine ventilation and disaster prevention. mechanical drawing basics of coal mine electrical and mechanical equipment in good condition standards. mining machinery hydraulic transmission and control of basic knowledge. basic kn. N° de réf. du vendeur MY9348
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