scraper ring meaning in Chinese

刮油环
刮油涨圈
油圈

Internal combustion engines - piston rings - scraper rings
内燃机.活塞环.刮油环
Internal combustion engines - piston rings - scraper rings made of cast iron
内燃机.活塞环.铸铁制刮环
Internal combustion engines ; piston rings ; scraper rings ; identical with iso 6623 : 1986
内燃机.活塞环.刮油环
Internal combustion engines - small diameter piston rings - part 8 : scraper rings
内燃机.小直径活塞环.第8部分:刮油环