
METALLIC MATERIALS - HARDNESS TEST - PART 1: ROCKWELL TEST (SCALES A, B, C, D, E, F, G, H, K) AND ROCKWELL SUPERFICIAL TEST (SCALES 15N, 30N, 45N, 15T, 30T AND 45T)
出版:Comite Europeen de Normalisation

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METALLIC MATERIALS - HARDNESS TEST - PART 1: ROCKWELL TEST (SCALES A, B, C, D, E, F, G, H, K) AND ROCKWELL SUPERFICIAL TEST (SCALES 15N, 30N, 45N, 15T, 30T AND 45T)
出版:Comite Europeen de Normalisation
专家解读视频