Home / Standards / GB/T 14389-1993 GB/T 14389-1993 Active Test method for impact toughness of high performance ceramics 工程陶瓷冲击韧性试验方法 Standard Type GBT ICS 81.060 CCS Q32 Status 现行 Issue Date 1993-04-29 Implementation 1993-02-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A