金(jin)屬硬度(du)對(dui)照(zhao)表（布氏(shi)(shi)硬度(du)HB、洛(luo)氏(shi)(shi)硬度(du)HRC、肖氏(shi)(shi)硬度(du)HS、維(wei)氏(shi)(shi)硬度(du)HV）互換對(dui)照(zhao)表


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