Home / Standards / GB/T 6931.3-1986 GB/T 6931.3-1986 Abolished Synchronous belt drives--Terminology 同步带传动术语 Standard Type GBT ICS 21.220.10 CCS J18 Status 废止 Issue Date 1986-08-11 Implementation 1987-08-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A