单词	a sample copy
释义	a sample copy 样本
随便看	universal joint coupling universal joint universal-joint universal joint assembly universal-joint assembly universal joint coupling, homokinetic universal joint coupling with pins universal joint cross universal-joint cross universal joint cross bearing universal-joint cross bearing universal joint cross grease fitting universal-joint cross grease fitting universal joint crossing shaft universal joint cross oil valve universal-joint cross oil valve universal joint cross relief valve universal-joint cross relief valve universal-joint cross trunnion universal joint drive universal joint driving universal-joint driving universal jointed shaft universal-jointed shaft universal joint flange