GB/T 34630.3-2017搅拌摩擦焊铝及铝合金第3部分:焊接操作工的技能评定国家标准
英文:Friction stir welding—Aluminium and its alloys—Part 3:Qualification of welding operators GB/T 34630.3-2017介绍: 国家标准《搅拌...
英文:Friction stir welding—Aluminium and its alloys—Part 3:Qualification of welding operators GB/T 34630.3-2017介绍: 国家标准《搅拌...