That means the toothbrush handle should fit comfortably in your hand and the toothbrush head should feel comfortable in your mouth and be able to reach every tooth surface.
那就是说，牙刷柄应该合手，牙刷头应该合嘴并能刷到牙齿的每个面。
These formulae are suitable for any contacting point of tooth surface meshing.
这些公式适用于齿面啮合的任何接触点。
On the base of principle of involute gear and its property, the formation of tooth surface are introduced.
根据渐开线齿轮的原理和渐开线的基本性质，介绍渐开线齿轮齿廓的形成。
A mathematical model of spiral bevel gear tooth surface was built by analyzing manufacture method and meshing theory.
通过分析锥齿轮的加工方法和齿轮啮合理论，建立了螺旋锥齿轮齿面数学模型。
The error correction model of tooth surface was established by machine tool adjustment parameters and meshing principle.
结合机床调整参数、齿轮啮合原理，建立了螺旋锥齿轮齿面误差修正模型。
In this paper, a method of using single laser — beam spiral scanning to treat the tooth surface of standard spur gear is proposed.
提出标准直齿圆柱齿轮轮齿表面应用单激光束螺旋扫描的处理方法。
This air scaler is intended to remove dental plaque, calculus and stain from tooth surface and tooth root by dental professionals only.
本产品是由资质的口腔科医生在口腔科治疗过程中对患者的牙体表面所粘着的牙垢，牙结石，着色去除时所使用的设备。
The results show that the micro rotational Angle induced by the tooth surface elastic deformation has definite effect on meshing points.
结果表明，齿面弹性变形引起的齿轮轮齿的微小转动对啮合点的最终位置有一定的影响。
The method of gear dynamic mutual abrasion is a method in which the dynamic force on tooth surface was used to do the precision finishing.
齿轮动力互研法是利用齿面动态力达到齿轮精加工目的的方法。
In this project we have carried out a research on the buried arc automatic welding process for large welded gears with hard tooth surface.
对大型硬齿面焊接齿轮的埋弧自动焊工艺进行了探索和实施。
Failure mode of tooth surface is varied such as teeth surface pitting, teeth wear, teeth bonding and teeth plastic deformations and so on.
齿面常见的失效形式有齿面点蚀、齿面磨损、齿面胶合和齿面塑性变形等。
The speed reducer gear tooth surface through contact fatigue strength to calculate, through the tooth root bending fatigue strength check;
减速器中齿轮通过齿面接触疲劳强度来计算，通过齿根弯曲疲劳强度验算；
The new tooth surface can be prolonged by the normal profile of the internal toroidal surface, or replaced by an equal pitch helical surface.
其二为一种修整的线接触，展成的等螺距齿面与理论轨迹曲面沿某一空间曲线近似相切。
The above research finds out the influence of grinder error and machining setting parameter error on tooth surface error of spiral bevel gear.
上述研究查明了磨床误差及加工调整参数误差对螺旋锥齿轮齿面误差的影响机制。
The motion optimization method is proposed, by which transmission errors anddiscontinuousness of tooth surface meshing is decreased to minimum.
提出了运动优化的方法，通过预设传动误差抛物线函数，使齿面啮合时运动误差和不连续性减至最小。
During ausform finishing process of hardened gears, there is plastic displacement of metal on the tooth surface and the distortion of tooth profile.
在齿轮热滚挤加工中，轮齿上的金属在强制挤压力的作用下沿齿面产生塑性流动，使齿形发生变化。
The distribution feature and the fluctuation tendency of the temperature in the vicinity of the worm wheel tooth surface were investigated and analyzed.
分析了邻近蜗轮齿面的温度分布特征及温度变化的趋势。
The rolling tests prove that this setup model can control precisely the displacement of the lapped area in the tooth surface and keep the even backlash.
利用轮齿接触分析与齿轮啮合原理，建立了齿面均匀研磨与定点研磨控制的几何运动模型，经滚检检验，该模型能对齿面研磨位置与侧隙进行较准确的控制。
The principle for the selection of technology parameter and the main points for processing the tooth surface by scraping with the carbide hob were stated.
介绍了中硬齿面齿轮的刮削工艺，叙述了用硬质合金滚刀对齿面进行刮削加工的工艺参数选择原则及刮削要点。
Generating theory of digital tooth surface is a new machining theory. There is great difference in generating motion between digital tooth surface and continual one.
数字化齿面加工理论是一种新的齿轮加工理论，它和连续齿面展成加工运动有较大的差异。
The algorithm of disperse tooth surface contact analysis is established and deduced, which lays the foundation for the digital measure and analyzing of tooth surface.
建立和推导了离散齿面接触分析算法，为齿面数字化测量分析提供基础。
The common conjugate surface includes tooth surface of gear, working surface of solid CAM, helicoidal surfaces existing in spiral burr, worm, chip flute of cutters, and so on.
常见的共轭曲面包括齿轮的齿面、空间凸轮的工作面和螺旋面等，其中螺旋面被广泛应用于螺纹、蜗杆、螺杆泵及金属切削刀具等领域。
The micro angle induced by the tooth surface elastic deformation causes the change of meshing points. Quasi-Hertzian analysis is defined as the process of tooth meshing analysis.
将齿轮因齿面变形而产生微小转角，继而进行齿面啮合分析的过程定义为拟赫兹接触分析。
The error correction model of tooth surface and solving method using TSVD were verified experimentally, and the tooth surface machining quality of spiral bevel gear was improved.
实验验证了本文齿面误差修正模型及提出的TSVD法求解的正确性，提高螺旋锥齿轮齿面加工质量。
The geometric configuration, moving conditions and force conditions of the tooth surface and the process of rock disintegration must be studied in designing the cutting structure.
欲设计合理的齿面结构必须研究齿面的几何形状、运动状态、受力状态和岩石破碎过程。
METHODS: the intact dental plaque biofilm specimen was generated on the tooth surface. The specimens of the biofilms were imaged and analyzed by confocal laser scanning microscope.
方法：从牙齿表面获得完整的菌斑生物膜标本，运用激光共聚焦显微镜对其进行断层扫描和分析。
A method of modifying the double enveloping worm gearing with developable tooth surface has been proposed to reduce the sensibility of the worm gearing to the manufacturing errors.
提出了对二次包络环面蜗杆传动修形的方法，以降低蜗轮副对制造误差的敏感性。
Due to the above mentioned defects, early fatigue peeling occurs under the condition of overly contact stress at the top of the tooth caused by abnormal contact at the tooth surface.
因此，在齿面非正常接触导致齿顶接触应力过大的情况下，该齿轮发生了早期疲劳剥落。
According to point coordinates on the tooth surface calculated theoretically and using FORTRAN, this paper compiles the programs and builds 3d finite element model of the helical gear.
运用FORTRAN语言，并根据理论计算得到齿面点坐标，编制程序，建立斜齿轮三维有限元分析模型。
According to point coordinates on the tooth surface calculated theoretically and using FORTRAN, this paper compiles the programs and builds 3d finite element model of the helical gear.
运用FORTRAN语言，并根据理论计算得到齿面点坐标，编制程序，建立斜齿轮三维有限元分析模型。
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