GB/T 41979.3-2022搅拌摩擦点焊铝及铝合金第3部分:焊接操作工的技能评定国家标准
英文:Friction stir spot welding—Aluminium and its alloys—Part 3:Qualification of welding operators GB/T 41979.3-2022介绍: 国家...
英文:Friction stir spot welding—Aluminium and its alloys—Part 3:Qualification of welding operators GB/T 41979.3-2022介绍: 国家...