the root of a tooth
英
美
- 牙根
双语例句
- The root is covered with a hard material called cementum.
牙根上覆盖着的坚硬材料叫作牙骨质。 - The Center of rotation located in trifurcation area.
牙旋转中心位于三牙根分叉下方附近。
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