
Copper Alloy Number 260 (cartridge Brass, 70%); Sheet, Strip, Plate, Bar And Discs
出版:US Military Specs/Standards/Handbooks

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Copper Alloy Number 260 (cartridge Brass, 70%); Sheet, Strip, Plate, Bar And Discs
出版:US Military Specs/Standards/Handbooks
专家解读视频