洛氏 ISO 6508 / ASTM E-18: HRA - HRB - HRC - HRD - HRF - HRG - HRL - HRM - HRR / HRN - HRT. HBWT 勃氏 ISO 6506 / ASTM E-10: HB 30 - HB 10 - HB 5 - HB 2,5 ...
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