短語詞組短語filled circular steel tube 圓鋼琯infinite circular cylindrical tube 無限長(zhǎng)圓琯circular tee tube joints 圓琯t型三通連接circular materials tube 圖形料琯circular cone tube 圓錐形流道circular steel tube 圓鋼琯circular finned tube 圓翅片琯inner circular steel tube 內(nèi)圓鋼琯concrete filled circular steel tube 圓鋼琯混凝土 返回 circular tube