短語詞組短語Piston and rod assembly 向?qū)лS承piston top rod 動力活塞頂桿piston connecting rod unit 活塞連桿組piston push rod 活塞推桿piston and rod group 活塞與連桿組件piston tail rod 活塞尾桿double piston -rod 雙活塞桿piston n rod 活塞連桿;活塞桿 返回 piston rod