基本解释混凝土同根派生 英汉例句thin wall cast-in-situ eoncrete pipe pile 薄壁混凝土桩reinforced eoncret vaulted and curved beam 钢筋混凝土拱状曲梁high volume fly ash eoncrete 粉煤灰mass eoncrete 大体积混凝土mass eoncrete casting 大体积混凝土浇筑