DIN 50157-2 (2008-04) 标准详情
- 标准号：DIN 50157-2 (2008-04)
- 中文标题：
- 英文标题：Metallic Materials - Hardness Testing With Portable Measuring Instruments Operating With Mechanical Penetration Depth - Part 2: Verification And Calibration Of The Testing Devices
- 标准类别：德国标准DIN
- 发布日期：
