短語詞組短語swivel ball universal joint 萬向轉(zhuǎn)接頭ball -joint 球承;球鉸對中hollow ball bolted joint 空心螺栓球節(jié)點ball universal joint 球籠萬向節(jié)Birfield ball -joint 球籠式等速萬向節(jié)Ball -joint products 球銷類零件ball shape joint 球形節(jié)點tripod ball sliding joint 三球銷移動副 返回 ball joint