基本解释n.筑路石料同根派生 英汉例句The paper states the development and application of raw material as cement, fertilizer and the roadstone and the recovery of useful componants are also discussed. 并对它们作为水泥、肥料生产和筑路工程中的原材料及有用组分回收等方面的开发利用进行了探讨。