BS EN ISO 6508-1-1999 Metallic materials — Rockwell hardnesstest — Part 1 Test method (scales A, B,
标准简介
BS EN ISO 6508-1-1999 Metallic materials — Rockwell hardnesstest — Part 1 Test method (scales A, B, C, —, E, F, G, H, K, N, T)
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