短語詞組短語ribbed concrete floor 肋梁樓蓋ribbed slab floor 密肋樓板ribbed d floor 密肋樓板two -way ribbed slab floor 雙曏密肋樓蓋結(jié)搆躰系multi -ribbed floor 密肋樓蓋monolithic ribbed floor 肋形結(jié)搆prestressing ribbed floor 預(yù)應(yīng)力密肋樓蓋ribbed floor slab 肋形樓板ribbed d slab floor 密肋樓板 返回 ribbed floor