释义 |
DEFINITIVE EXAMPLES 权威例句〔Portland cement〕A hydraulic cement made by heating a mixture of limestone and clay in a kiln and pulverizing the resulting material.普通水泥:一种硬性水泥,其制法是将石灰石和粘土混合后放在窑里烧制,再将烧制出的材料粉碎而成美国传统〔pozzuolana〕A siliceous volcanic ash used to produce hydraulic cement.火山灰水泥,火山石:用来生产水硬水泥的含硅火山灰美国传统〔trass〕A light-colored tuff used in hydraulic cement.粗面凝灰岩:一种用来生产硬水泥的淡色凝灰岩美国传统 |