
Metallic Materials - Hardness Test - Rockwell Test - Part 2: Superficial Test (scales 15n, 30n, 45n, 15t, 30t And 45t)
出版:Asociacion Espanola de Normalizacion

專家解讀視頻
Metallic Materials - Hardness Test - Rockwell Test - Part 2: Superficial Test (scales 15n, 30n, 45n, 15t, 30t And 45t)
出版:Asociacion Espanola de Normalizacion
專家解讀視頻