短語詞組短語filled circular steel tube 圓鋼管infinite circular cylindrical tube 無限長圓管circular tee tube joints 圓管t型三通連接circular materials tube 圖形料管circular cone tube 圓錐形流道circular steel tube 圓鋼管circular finned tube 圓翅片管inner circular steel tube 內(nèi)圓鋼管concrete filled circular steel tube 圓鋼管混凝土 返回 circular tube