Home / Standards / GB/T 16848-1997 GB/T 16848-1997 Abolished Accuracy of double enveloping worm gearing withstraight line generatrix 直廓环面蜗杆、蜗轮精度 Standard Type GBT ICS 21.200 CCS J17 Status 废止 Issue Date 1997-06-06 Implementation 1998-01-01 Responsible Dept 国家标准委 Drafting Unit N/A