查询词典 tooth root

On the same day my car broke down, my refrigerator conked out and I learned that I needed root-canal work in my right rear tooth

我的汽车坏了，电冰箱出毛病了，还有人说我的右后牙得做牙根管治疗。而这几件事竟然都发生在同一天！

The stellate reticu-lum and the dental follicle of the underlying permanent tooth seems to be important for the deciduous root re-sorption. However, primary teeth without a permanent successor eventually exfoliates as well. Our current understanding on the underlying mechanisms is slim.

继承恒牙的牙囊和星网状层似乎在乳牙根的吸收中起着重要作用，而继承恒牙先天性缺失的乳牙根吸收最终仍会发生，其机制目前尚不明了。

One tooth works while the other one idles and gets no stimulation in its root area.

一颗牙齿在工作，另一颗则闲着，它的牙根部得不到刺激。

Teeth have two basic parts, a root to anchor the tooth to the jaw and a crown above the gum line.

牙齿有两个基本部份，牙根把牙齿锚定在下颌上，牙冠位于齿龈线以上。

Based on the present histological and previous molecular biological studies, the special structure at the apical end is obviously different from the cervical loop giving rise to Hertwig's epithelial root sheath, in human, mouse and rat molar tooth germs.

作者所作的组织学和分子生物学实验结果表明，人类、大鼠及小鼠磨牙牙胚中这种根尖末端特殊的结构与颈环区Hertwig上皮根鞘结构明显不同。

Methods:Twenty-three tooth of 19 patients were examined by using ProMax lateralal sagittal axial panoramic tomographs before the teeth were extracted or orthodonted to assessment location and shape of dental root.

随着影像学检查技术的发展，全景机的操作性能及程序化控制水平明显提高，可进行多种部位投照[1]。ProMax数字化X光机可以投照颌骨牙列断层片。

The main, calcareous part of a tooth, beneath the enamel and surrounding the pulp chamber and root canals.

珐琅，搪瓷；瓷釉，瓷漆；珐琅质3、抽吸；空吸（抽掉空气或液体使另一种物质因压力而被吸入

Based on the envelope principle and the coordinate transformation, the function of the transition curve between the involute tooth profile and root circle is conformed.

基于包络原理和坐标变换公式，确定了渐开线齿廓和齿根圆之间过渡曲线的方程。

ResultsThe root canals of 120 tooth were removed the filling and negotiated successfully,the 22 were failed.

结果成功去除原根管充填物及通畅根管120颗，22颗因出现侧穿、根管钙化无法扩通、器械折断而无法进一步治疗，维持现状或拔除。

Results］The root canals of 120 tooth were removed the filling and negotiated successfully, the 22 were failed.

结果］成功去除原根管充填物及通畅根管120颗，22颗因出现侧穿、根管钙化无法扩通、器械折断而无法进一步治疗，维持现状或拔除。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。