Isbn: 9787502561277 - 气焊工——职业技能鉴定培训读本（高级工） (1 resultados)

paperback. Condición: New. Paperback. Pub Date: 2006 Pages: 327 in Publisher: Chemical Industry Press gas welders based on national occupational standards and vocational skills identification specification. systematic introduction to the basic knowledge and principles of gas welding. gas cutting focuses on gas welding. gas cutting operation techniques and equipment. combined with the actual gas welding process and operating techniques about a variety of commonly used materials and specialty materials. Theory with pract.…