Steel, Bars, Forgings, And Rings 0.95Cr - 0.20Mo (0.38 - 0.43C) (Sae 4140) Annealed
出版:SAE International
专家解读视频
Steel, Bars, Forgings, And Rings 0.95Cr - 0.20Mo (0.38 - 0.43C) (Sae 4140) Annealed
出版:SAE International
专家解读视频