短語詞組短語rotary elbow joint 活動肘關節(jié)rotary y joint 旋轉連接rotary steam joint 旋轉式汽管接頭annular rotary joint 環(huán)狀旋轉接頭rotary joint trouble 旋轉接頭故障air rotary joint 旋轉接頭optical rotary joint 光旋轉連接器Waveguide rotary joint 波導旋轉關節(jié) 返回 rotary joint