白发农民露出缺齿的微笑。
使用宽齿的梳子来梳理头发。
Use a wide-toothed comb rather than a brush to untangle hair.
花键的键齿的齿形为渐开线形式的花键。
本模型显示切齿、尖齿、磨齿的不同形态。
This model shows the morphological differences of the incisor , canine and molar teeth.
鲨鱼的皮肤是由被称之为肤齿的微小鳞屑所构成。
Shark skin is made of tiny scales known as dermal denticles that can be seen here.
两个硬币，一个好一个坏，就像是一个齿的两个边。
The two coins, one good and one bad, are like two sides of a single saw-tooth.
提出了一种具有滚动齿的新型锥面包络蜗杆分度凸轮机构；
In this paper, a new type of conical envelope worm indexing cam mechanism with rolling teeth is proposed.
在计算机中，这个游戏进行100次，以模拟有许多齿的棘轮。
In a computer, the games are played 100 times, mimicking a ratchet with many teeth.
舵片上有一个带齿的轮，这个轮受到气流的冲击而高速转动。
The TAB contains a toothed wheel which is driven at a high angular velocity by the impinging airstreams.
球齿轮是在其球冠面上分布着一道道环形齿的一种新型齿轮。
The spherical gear is a new type of gear formed by attributing ring teeth on a spherical face.
产品特性表。第86部分：钻，埋头钻和带分度镶齿的铰刀。
Tabular layout of article characteristics - part 86: drills, counter sinking and reaming tools with indexable inserts.
着重论述了冷焊修补压榨辊崩齿的方案选定、焊条选择和工艺。
The choice of plan, welding rod and technology of mending the broken tooths of a roller are much discussed.
叙述了辊锻工艺实质及其适用性，用辊锻成形工艺生产耙齿的优点。
The article has described substance and its applicability of roll forging technology, advantages producing harrowing tooth with roll forging forming technology.
快速安装和更换所制造的分布是保证由于在带齿的交换型材紧固系统。
Fast fitting and replacing of the manufactured profiles is ensured due to the exchangeable profile fastening system in the belt tooth.
通过对采煤机截齿截煤过程中的受力分析，建立了采煤机截齿的力学模型。
Through analysis of the force of shearer pick in the mining process, the mechanics model of shearer pick is built.
NASA说乘员已经下传了有关一个断了两个齿的小型星型齿轮的视频和图像。
NASA said the crew had sent down video and photographs of a small star-shaped gear with two broken teeth.Experts were trying to determine whether it was related to the problem.
NASA说乘员已经下传了有关一个断了两个齿的小型星型齿轮的视频和图像。
NASA said the crew had sent down video and photographs of a small star-shaped gear with two broken teeth. Experts were trying to determine whether it was related to the problem.
推导了空间凸轮和端齿的主曲率和主曲率半径的计算公式，给出了计算实例。
The calculating formulas on the main curvature and curvature radius of CAM and face tooth are deduced, and the calculating examples are presented.
分析横轴式截割头摆动截割时截齿的运动轨迹，建立了其几何模型和运动方程。
By analyzing motion orbits of picks when a horizontal cutting head cuts, geometry models and motion equations are set up in the paper.
此外还研制了简单综合方法用于确定滚道型面并计算了摆线滚道与球齿的接触应力。
A simple synthesis method was also found to determine the raceway forms and compute the contact forces among the balls and raceways.
根据单个截齿的受力模型和计算公式，建立了采煤机滚筒力矩模型和载荷波动模型。
On the basis of mechanical model and formula of single bit, the moment model and load fluctuation model of shearer's drum are built.
它是包含有转动盘、继电器、步进器和荆齿的复杂设计，它能将键盘输入任意加密解密。
It had a complex design consisting of rotors, electric relays, steppers and ratchets, which would translate the whatever was typed on its keyboard into or out of code.
降低粘性土壤对刀齿表面接触面积可以减小土壤对刀齿的粘附和降低刀齿切削土壤的阻力。
Reduction of contact area between cohesive soil and the surface of dredging tools is able to decrease soil adhesion and cutting resistance.
所得结论对于改进刀形截齿的设计，进一步提高其截割性能和截割效率有一定的指导作用。
The obtained got conclusions may be used to improve the design of the pick, enhance further the cutting performance and benefit the pick.
对生产中所遇到的特殊角度汽封齿的加工问题，设计了专用滚压刀具，并提出了实施方案。
Special rolling tools are designed for machining special gland sealing gears in production and some schemes are put forward to be put into practice.
在结构上采用了三翼四齿的钻头体、弧槽形排粉沟槽，适用于硬、中硬、软岩的三种齿形。
The drill bit body has three wings four cylindrical tungsten carbide inserts and curved slots for removal of cuttings.
在结构上采用了三翼四齿的钻头体、弧槽形排粉沟槽，适用于硬、中硬、软岩的三种齿形。
The drill bit body has three wings four cylindrical tungsten carbide inserts and curved slots for removal of cuttings.
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