nbkxhwd@163.com 发表于 2020-12-14 13:39:51

ASTM B 247 - 15 Standard Specification for Aluminum and Aluminum-Alloy

ASTM B 247 - 15 Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings

lotus999 发表于 2020-12-14 13:39:52

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