Home / Standards / GB/T 24619-2009 GB/T 24619-2009 Abolished Curvilinear toothed synchronous belt drives 曲线齿同步带传动 Standard Type GBT ICS 21.220.10 CCS J18 Status 废止 Issue Date 2009-11-15 Implementation 2010-09-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会