短語(yǔ)詞組短語(yǔ)Piston and rod assembly 曏導(dǎo)軸承piston top rod 動(dòng)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