国产高清精品免费区-男女一进一出抽搐免费视频-中日韩一二三级黄色永久视频-日韩精品人妻一区二区免费视频-日本久久视频在线观看-99热这里只有精品88热-亚洲韩国黄色最新短视频一区-日韩伦理在线观看免费全集-国产av一区二区三区天堂

Enamel Organs

《英文msh詞典》Enamel Organs
[入口詞] Enamel Organs
[主題詞] Enamel Organ
[英文釋義] Epithelial cells surrounding the dental papilla and differentiated into three layers: the inner enamel epithelium,consisting of ameloblasts which eventually form the enamel,and the enamel pulp and external enamel epithelium,both of which atrophy and disappear before and upon eruption of the tooth,respectively.

熱門查詢