1. Structural changes of dental enamel, dentine, cementum and pulpal reactions in carious process are discussed. 其中,釉质龋的研究资料最为丰富,其次是牙本质,有关牙骨质龋的资料最少。
2. They called it cementum – the first true concrete. It's the key reason why so much of what Rome built still survives today. 他们称之为水泥,即首次问世的真正混凝土,是罗马建筑至今仍健在的关键原因。
3. Structural changes of dental enamel, dentine, cementum and pulpal reactions in carious process are separately and consisively discussed. 其中,釉质龋的研究资料最为丰富,其次是牙本质,有关牙骨质龋的资料最少。
英英解释
n.
1. a specialized bony substance covering the root of a tooth