Standard specification for copper - beryllium alloy forgings and extrusions alloys uns nos . c17500 and c17510 铜铍合金锻制和挤制合金的标准规范
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Aluminium and aluminium alloys - extruded precision profiles in alloys en aw - 6060 and en aw - 6063 : technical conditions for inspection and delivery 铝及铝合金.挤制合金en aw - 6060和en aw - 6063精密型材.检验和交付技术条件