tooth root

tooth root的基本解释

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牙根

与tooth root相关的网络例句 [注：此内容来源于网络，仅供参考]

Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通过分析保证行星轮作螺环运动时与内斜齿轮实现连续啮合传动的运动和几何条件，提出了圆柱内斜齿轮齿面的两种形成原理：即由球齿运动包络曲面的法截面沿其齿根圆螺旋线在径向的投影进行拓展所形成的内齿面，以及与球齿运动包络曲面呈近似相切接触的等螺距齿面构成的内齿面。

The gum atrophies to still cause the tooth dew outside the root, the surface of tooth root doesn't have tooth enamel quality, not only be easily worn away while brushing teeth once there being no the protection of guming, in the meantime to cold, hot and sour incitement very sensitive, the mouth cavity medical science is called "tooth essence allergy", people often mistaken for this kind of phenomenon to peep out tooth nerve to cause ache, and this is incorrect.

牙龈萎缩还导致牙根外露，牙根的表面没有牙釉质，一旦没有了牙龈的保护，不仅容易在刷牙时受到磨损，同时对冷、热、酸的刺激非常敏感，口腔医学称为&牙本质过敏&，人们常把这种现象误认为是露出牙神经导致疼痛，这是不对的。

The tooth root development is an important part of tooth development. Hertwig's epithelial root sheath takes part in and plays important role in tooth root development.

牙根发育是牙齿发育的重要部分，Hertwig上皮根鞘(Hertwig's epithelial root sheath， HERS)参与牙根发育，并起重要作用。

与tooth root相关的网络解释 [注：此内容来源于网络，仅供参考]

root cur：表示 "关心

379 root cult 表示 "耕种,培养" till | 380 root cur 表示 "关心" care | 383 root dent 表示 "牙齿" tooth

root dent：表示 "牙齿

380 root cur 表示 "关心" care | 383 root dent 表示 "牙齿" tooth | 384 root derm, dermat 表示 "皮肤" skin

root canal, pulp canal：牙根管

牙根||root of tooth | 牙根管||root canal, pulp canal | 牙根尖||apex of root of tooth