Home / Standards / GB/T 1149.2-1994 GB/T 1149.2-1994 Abolished Internal combustion engines--Piston rings--Vocabulary 内燃机活塞环 术语 Standard Type GBT ICS 27.020 CCS J92 Status 废止 Issue Date 1994-12-20 Implementation 1995-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A