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ASTM B240-2017 铸造与模铸件用锌和锌铝合金锭的规格 Standard Specification for Zinc and Zinc-Aluminum (ZA) All...2023-07-25

ASTM B179-2017所有铸造工艺铸件用铝合金锭和溶融铝合金的规格Standard Specification for Aluminum Alloys in Ingo...2023-04-23