活塞刮油环  piston scraper ring

活塞环油孔  piston ring oil hole

活塞油环  piston oil ring; oil control piston ring

活塞油环槽  piston oil ring groove

钩形刮油环  hook oil ring

刮油环  scraper ring; oil control rail; oil scraping ring; scrapper ring; oil scraper ring; scraping ring; cutter oil ring

活塞刮削  piston scraping

双刃刮油环  double-hook oil ring

斜口刀刮油环  bevel cutter oil ring

斜口刮油环  bevel oil ring

钻孔刮油环  drilled oil ring

变量活塞油缸  Cylinder with variable piston

变速箱机油油塞  transmission oil plug

车轮油缸活塞环密封座  wheel cylinder piston cup seal seat

活塞油  piston oil

活塞油槽  piston oil slot

活塞油孔  piston oil hole

活塞油润  piston oiling

伺服机构活塞油缸  servo piston cylinder