| 释义 |
釉质yòuzhì齿冠表面的一层硬组织,主要成分是磷酸钙和碳酸钙,此外还含有氟和一些有机质。有保护牙齿免受磨损的作用。{enamel; layer of hard tissues covering the crown of a tooth, which consists chiefly of calcium phosphate and calcium carbonate, and also fluorine and organic matters, and helps to protect the tooth from wear;}也叫also珐琅质{fàlángzhì}。 |