tooth form

The Deduction and Calculation of the Tooth Form Factor YFa and the Tooth Root Stress Concentration Factor Ysa

齿形系数Y（Fa）与齿根应力集中系数Y（sa）的推导与计算

This paper gives the new technique of tooth profile on the normal section of nobbing-shaving cutter involute worm which is imitated by hyperbola and suggests that axial section of grinding wheel can be obtained in hyperbolic form by dressing conical surface of grinding wheel along the inclined straight line.

给出了用双曲线拟合滚剃刀渐开线蜗杆法剖面齿形新技术，提出了锥面砂轮按斜直线进行修整，能够获得砂轮轴截面为双曲线形状。

new method for measuring error of tooth form of involute spur gear

渐开线圆柱直齿轮齿形误差测量新方法

A Study on the New Tooth Form of the Sprocket Wheel

链轮新齿形的研究&大圆弧渐开线齿形

The advanced experiences in the design of tooth form, cutting technology, machine and tool install and adjustment of multiple thread used for focal adjustment are also presented. So the multiple thread head not lap, that has troubled for many years.

还介绍了用于镜头调焦的多线螺纹的牙型设计、切削工艺、机床和刀具安装调整等先进经验，彻底解决了多年存在的多线螺纹要研磨的问题。

Now a Bristol University dental scientist has discovered that a common bacteria responsible for tooth decay and gum disease can break out into the bloodstream and help blood clots to form.

最近英国布里斯托尔大学科学家经研究发现，一种导致蛀牙和口腔疾病的常见细菌能够侵入血液循环系统，导致血栓形成。

There are not only the obsorption of dead bone but also the form of new bone during the agglutination of bone fracture. It is a rebuilding process of the bone tissue. It is conformable with the alveolar bone rebuilding process during the orthodontic tooth movement.

在骨折的愈合过程中既有死骨的吸收，也有新骨的生成，它是一个骨组织的改建过程，这与正畸牙齿移动过程中牙槽骨的改建过程是一致的。

Tooth Surface Manufacturing Technology Based on the Free-form Bevel Gear Machine

基于Free-form型锥齿轮机床的齿面制造技术

Application of NN Form Small Tooth Number Difference Planetary Transmission

NN型少齿差行星传动的应用

A face harmonic motion drive of separate tooth is a new form of utility model drive.

散齿端面谐波齿轮传动是一种实用的新型传动方式,属于一种空间的活齿传动结构.

The wear form of space gear mechanism in the vacuum environment was observed, and the degree of wear at the addendum, near the pitch and between the addendum and the tooth pitch, were analyzed by SEM.

采用扫描电镜分析了空间齿轮在真空环境下的磨损形式，同时分析了齿轮轮齿在齿顶、节圆附近以及齿顶和节圆之间的磨损程度。

Under the condition that the engaged line initial displacement is influenced by modified tooth form, the formulas of the flow pulse rate of the second type compound gear pump was deduced.

简要说明了修正时对啮合点初始位移的影响，给出了修正齿形的第2类复合平衡齿轮泵流量脉动率公式。