
Iron And Steel Products - Conventional Rockwell Hardness Tests - Rockwell Scale Hrb' For Thin Products - Rockwell Scales N And T For Skin Hardness
出版:Association Francaise de Normalisation

专家解读视频
Iron And Steel Products - Conventional Rockwell Hardness Tests - Rockwell Scale Hrb' For Thin Products - Rockwell Scales N And T For Skin Hardness
出版:Association Francaise de Normalisation
专家解读视频