Steel Forgings, Alloy, High Yield Strength (Hy-80 And Hy-100)
出版:US Military Specs/Standards/Handbooks
专家解读视频
Steel Forgings, Alloy, High Yield Strength (Hy-80 And Hy-100)
出版:US Military Specs/Standards/Handbooks
专家解读视频