查询词典 tooth

Therefore, many researches have been taken on the theory and manufacture of worm transmission, including the research on new tooth profile, new drive type, tooth cutting and measuring, lubrication, material and heat treatment, design, calculation, simulation analysis and optimization.

蜗杆传动在理论和加工方面都有较广泛深入的研究，如：新的啮合齿形和新的传动类型的研究；以蜗杆副的加工制造和测量为主要内容的生产实践研究；对蜗轮蜗杆油品和蜗杆副材料的研究；以计算机应用为特点的设计计算、仿真分析、优化等研究。

The central inner gear theory equation and tooth profile work equation with two-teeth difference cam profile rolling movable teeth were deduced, and in the consideration of central gear influenced by several parameters, the central gear tooth profile modification mode was analyzed and synthesized roundly.

推导二齿差凸轮激波滚动活齿传动的中心内齿轮理论方程及工作齿形方程，在给出考虑各参数影响的中心轮修形通用方程的基础上，较为全面地对中心轮齿廓的几种修形方式进行分析和综合。

Because of the fact, the bearing capacity of the whole drive cannot be developed well enough. To improve the performances of the load-capacity, transmission efficiency, and reliability of mechanical drive, we originally developed some designs of the double crank ring-plate-type cycloid planetary drive. The new-type drive keeps all the natural advantages, which is of multi-tooth mesh, small mesh angle, and hardened tooth flank of gears. Moreover, The drive does not need the special output unit as the ring-plate-type drive does, so that the rigidity of the output shaft becomes much higher. Since the tumbler bearing is placed outside the cycloidal gear, the size of the bearing is no longer restricted to any extent.

为大幅度提高其承载能力、传动效率和可靠性诸指标，我们创新研究出来的多种结构双曲柄环板式针摆行星传动，其特点是不仅保留着原摆线针轮行星减速器同时啮合齿数多，总法向力与总圆周力间夹角小，摆线轮与针轮齿均为硬齿面等本质上的优点；而且又具有环板式传动省去输出机构且输出轴刚性好，转臂轴承移至行星轮外，从而传递的转矩可以成倍提高的优点。

According to the principles of tooth meshing and manufacturing helicoi ds, a mathematics model is constructed to reflect the manufacture process of nut , and the formula of the grinding wheel section is developed. The parameters of the section are obtained through numeral arithmetic; moreover the parameters of the dresser are worked out. Based on these work, the solid model of the ball scr ew nut, grinding wheel and tooth dresser are developed in the Pro/E software, wh at's more, the process of the dressing...

根据螺旋面加工原理、齿形啮合原理及回转面砂轮加工螺母工艺建立了相应的数学模型，并推导出砂轮截形的计算公式；采用数值计算方法求解砂轮截形参数，进一步得到修整器靠模板的参数；在此基础上，利用Pro/E软件对大导程滚珠丝杠螺母、砂轮和砂轮修整器进行了实体建模，并对砂轮的修整过程和螺母的加工过程进行了运动仿真，有效地验证了砂轮截形的计算结果。

By the use of Circling cluster and Envlopment theory and flat surface sit-mark transformation theory, the chain wheel tooth equation of roller chain at high speed to match conjugage engagement is deduced.Establishing chain speed equation of roller chain at high speed,based on the analysis of the speed curves between roller chain at high speed and common roller chain,good drive of roller chain at high speed is verificated theoretically.By a example that move distance from transverse vibration between roller chain at high speed and common roller chain is contrasted,the accuracy of those theories that the paper brings up and higher functions of roller chain at high speed is proved.Finally, Establishing conjugage engagement line equation of roller chain at high speed and analyzing the complete engagement zone, the chain wheel tooth curve equation is studied at a higher degree. At the same time,the lack's place of the research result is pointed out.

依据高速滚子链设计要求与H_y-V_0齿形链的研究，阐述了滚子链传动实现准共轭啮合理论可能性；利用圆族包络法结合平面坐标变换理论推导出了满足共轭啮合的高速滚子链的链轮齿廓曲线；建立起高速滚子链链速方程，通过对高速滚子链与普通滚子链链速曲线的对比分析，从理论上验证了高速滚子链具有良好的传动性能；最后，建立起高速滚子链共轭啮合线方程，对其整个啮合区间进行了分析，进一步研究了链轮齿廓曲线方程，确定了主要参数的设计方法的问题，并同时指出了不足之处。

Tooth eruption ; Osteoprotegerin ; Tooth germ ; Dental sac

牙齿萌出；骨保护素OPG ；牙胚；牙囊

Tooth pulp is the tissue inside the roots of the teeth that contains all the nerves and blood vessels that nourish the tooth.

牙牙髓是组织内的根源牙齿包含所有的神经和血管滋养牙齿。

Aimed at the different tooth profile shape of five kinds of tooth profile plane models, the paper adopts a method of the control line to generate the finite element grid.

针对五类齿廓平面模型不同的齿廓形状，采用控制线法自动生成有限元网格。

I know tooth brush and tooth paste.

我知道牙刷和牙膏。

We want to buy Bio-Technology Products, Reagents and Supplies, Tooth Paste and Tooth Brush

我们要采购生化技术产品，试药和用品，牙膏和牙刷

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。