
Metallic Materials - Hardness Test - Rockwell Superficial Test (Scales 15N,30N,45N,15T,30T,45T And Hr30tm For Thin Products)
出版:Association Francaise de Normalisation

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Metallic Materials - Hardness Test - Rockwell Superficial Test (Scales 15N,30N,45N,15T,30T,45T And Hr30tm For Thin Products)
出版:Association Francaise de Normalisation
专家解读视频