Home / Standards / GB/T 2363-1990 GB/T 2363-1990 Abolished Accuracy of fine-pitch involute cylindrical gears 小模数渐开线圆柱齿轮精度 Standard Type GBT ICS 21.200 CCS J17 Status 废止 Issue Date 1990-09-08 Implementation 1991-10-01 Responsible Dept 国家标准委 Drafting Unit N/A