UNE-EN ISO 6508-2:2000 金属材料 洛氏硬度试验 第2部分:试验机的检定和校准(A、B、C、D、E、F、G、H、K、N、T 标尺)(ISO 6508-2:1999)
METALLIC MATERIALS - ROCKWELL HARDNESS TEST - PART 2: VERIFICATION AND CALIBRATION OF TESTING MACHINES (SCALES A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:1999)