Home / Standards / GB/T 17879-1999 GB/T 17879-1999 Abolished Gears--Surface temper etch inspection after grinding 齿轮 磨削后表面回火的浸蚀检验 Standard Type GBT ICS 21.200 CCS J17 Status 废止 Issue Date 1999-10-11 Implementation 2000-05-01 Responsible Dept 国家标准委 Drafting Unit N/A