GB/T 231.2-2022金属材料布氏硬度试验第2部分:硬度计的检验与校准国家标准
英文:Metallic materials—Brinell hardness test—Part 2: Verification and calibration of testing machines GB/T 231.2-2022介绍: ...
英文:Metallic materials—Brinell hardness test—Part 2: Verification and calibration of testing machines GB/T 231.2-2022介绍: ...