dentine A hard mesodermal material in teeth and some scales (cosmoid, ganoid and placoid scales) produced by odontobasts.
齿
组成牙齿或某些鳞片(硬鳞与盾鳞)中层
坚硬
。
dentine A hard mesodermal material in teeth and some scales (cosmoid, ganoid and placoid scales) produced by odontobasts.
齿组成牙齿或某些鳞片(硬鳞与盾鳞)中层坚硬。
enamel A shiny hard material covering the dentine of teeth and the surface of some scales (cosmoid and placoid scales).
珐琅有光泽坚硬包覆在牙齿及一些鳞片(圆鳞与盾鳞)表面。这是脊椎动所产生最坚硬。
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