GB/T 1149.17-2023内燃机活塞环第17部分:钢质螺旋撑簧油环国家标准
英文:Internal combustion engines—Piston rings—Part 17:Coil-spring-loaded oil control rings made of steel GB/T 1149.17-2023...
英文:Internal combustion engines—Piston rings—Part 17:Coil-spring-loaded oil control rings made of steel GB/T 1149.17-2023...