Home / Standards / GB/T 23538-2009 GB/T 23538-2009 Abolished Conventional abrasive — Determination of ball mill toughness 普通磨料 球磨韧性测定方法 Standard Type GBT ICS 25.100.70 CCS J43 Status 废止 Issue Date 2023-11-02 Implementation 2009-12-01 Responsible Dept N/A Drafting Unit N/A