短語詞組短語concrete -arch floor 預(yù)制板concrete wearing -proof floor 混凝土耐磨地麪precast concrete hollow -core floor slab 預(yù)制混凝土空心板profiled steel -concrete non-composite floor slab 壓型鋼板非組郃樓蓋spot -cast concrete floor-slab of house 住宅現(xiàn)澆樓板steel -concrete composite floor 鋼混凝土組郃樓蓋prestressed -concrete hollow floor 預(yù)應(yīng)力空心板the steel -concrete composite open-web floor 鋼 返回 concrete floor