短语词组短語Drawbar Organ 爵士風琴;音栓風琴drawbar trailer 牽引掛車;掛車slackless drawbar 無間隙牽引杆drawbar test 牽引試騐drawbar stay 牽引鉤卡子retractable drawbar 伸縮式聯結裝置free drawbar 鉸接牽引杆drawbar height 聯結點高度;牽引點高度drawbar pun 牽引杆拉力 返回 drawbar