飞机钣金工艺
aircraft sheet metal forming process
东北轻合金加工厂
the north-east light alloy falrication plant
非水高温冶金加工厂
nonaqueous pyroprocessing plant
铝合金加工材料
aluminum alloy processing material
铝及铝合金加工材料
aluminum and its alloy processing material
镁合金加工技术
Processing technique of magnesium alloys
magnesium fabrication technology
难加工金属材料
difficult processed metals material
difficult-cutting metal
轻合金加工技术
light alloy fabrication technology
钛及钛合金加工材
titanium and titanium alloy material