恒·变--连轧管工艺技术发展之路--纪念曼内斯曼兄弟发明斜轧穿孔工艺120周年

恒·变--连轧管工艺技术发展之路--纪念曼内斯曼兄弟发明斜轧穿孔工艺120周年的英文翻译

基本释义

• Permanency versus evolution--The route of the development of mandrel mill technology--commemorating the 120th anniversary of the invention of the rotary piercing process by Mannessmann brothers