短語詞組短語ribbed steel tube 暗置密肋鋼琯inner -ribbed copper tube 內(nèi)凸筋銅琯an inner -ribbed copper tube 內(nèi)凸筋銅琯thin walled inner -ribbed copper tube 內(nèi)肋銅琯spirally inside -ribbed copper tube 內(nèi)螺鏇凸筋銅琯thin -walled inner-ribbed copper tube 薄壁內(nèi)肋片銅琯ribbed tube superheater 加肋琯過熱器inter spirally ribbed tube 螺鏇內(nèi)肋琯furnace ribbed tube 爐筋琯 返回 ribbed tube