HB 3638-1985
撑簧
1985-11-08
GB/T 1149.14-2008
内燃机 活塞环 第14部分：螺旋撑簧油环
Internal combustion engines - Piston rings - Part 14: Coil-spring-loaded oil control rings
2008-08-11
GB/T 1149.17-2023
内燃机 活塞环 第17部分：钢质螺旋撑簧油环
Internal combustion engines—Piston rings—Part 17:Coil-spring-loaded oil control rings made of steel
2023-12-28
JB/T 13501.5-2018
内燃机 大缸径活塞环 第5部分：螺旋撑簧油环
Internal combustion engines-Large diameter piston rings-Part 5: Coil-spring-Ioaded oil controll rings
2018-04-30
GB/T 1149.15-2017
内燃机 活塞环 第15部分：薄型铸铁螺旋撑簧油环
Internal combustion engines—Piston rings—Part 15: Coil-spring-loaded oil control rings of narrow width made of cast iron
2017-07-12
MIL MS17134
CONTACT ASSEMBLY, ELECTRICAL, DRY REED TYPE, S.P.S.T. (NO S/S DOCUMENT)
干簧式电气触点组件 S.P.S.T.（无S/S文件）
1960-01-26