短語(yǔ)詞組短語(yǔ)impervious s core 不透水心墻concrete impervious core 混凝土防滲墻impervious sandy clay core 砂質(zhì)粘土防滲心墻Impervious Core Wall 防滲心墻central impervious core dam 防滲心墻壩construction of impervious core 防滲墻施工clay impervious core 粘土防滲墻Core impervious 不透水心墻;心墻防滲dam core impervious material 大壩心墻防滲摻合料 返回 impervious core