曲率

The lines look a little scribbly in the picture,but there is a method to the madness as its hard to get a straight accurate line due to hull curvature.

字里行间看一点scribbly中的图片，但有一个方法，以疯狂作为其难以得到准确的直线，由于船体曲率。

Firstly, the pretreatment of character to be recognized is researched, stressed discussing the subdivisional process of character, and a kind of fast shape preserving morphological thinning algorithm is used. In the following, how to construct the structure model on the basis of characteristic point sub-stroke and their interrelation is discussed, and a kind of method that describe sub-stroke through the feature of the sequence of curvature is brought forward. Finally, the paper adopts the recognising model of printing number that base on repository, and describes the constructing method of repository.

文中首先对待识别字符的预处理进行了研究，着重探讨了字符的细化过程，采用了一种基于数学形态学的保形的快速细化算法；接着探讨了如何以特征点和子笔段及其相互关系为基础构造结构模型，提出了一种以曲率序列性质描述子笔段的方法：最后采用了以知识库为基础的印刷体数字识别模型，并详细地描述了知识库的构造方法。

One is astigmatism which is defined as the curvature of the eye leading to blurriness that can be treated by toric classification .

一是散光是眼睛曲率定义为记号，可以导致治疗环面分类。

Tortuosity measures based on curvature performed less well.

以曲率为基础的迂曲度测量方法的一致性不如前者。

Cartilage specimens of the tragus were obtained from fresh human cadavers, and the parameters of the tragus were determined by curve fitting and cross-calibration.

由大体取得tragus软骨样本，量测tragus的各个曲率与长度参数。

When material is uncompressible, a group of four-sectors solutions and a three-sectors solution in which the elastic-unloading region vanishes are given respectively in the condition of supposing some singularity of curvature on the boundary between two regions.

第一部分首先考虑了不可压缩(ν=1/2)理想塑性材料，在假定区域交界线的曲率有一定奇异性的条件下，得到了裂尖场的一组四区解及不包含弹性卸载区的三区解。众所周知的由高玉臣。

Results indicate that radial distance of the bushing from the rotor center and the radius of the hemispherical bushing significantly affect wear rate,and minimzing both two values will result in lowest wear for micro-rotor systems in MEMS.However,it is noted that the bearing radius sets a lower limit on the hemispherical bushing radius since the bushings are located beyond the rotor inner radius.It is desirable to reduce their effects on friction and wear on micro-rotors by regulating the radius of the bushing and the radial distance of the bushing from the rotor center within permissive range of micro-fabrication.Severe wear exists with increasing applied load and rotating speed of the rotor.Stress distributions in the contact region are different from Hertz solutions due to the convergence stresses apearing on the uncontinuous curvature line and the contact pressures display symmetrical parabola in the contact region.

结果表明：在MEMS微转子系统中，微转子轴衬偏心距离和转子轴衬半径影响线磨损率，以两者减至最小为较理想，但须注意设计中轴承半径的限制，并使轴衬偏心距离大于轴承内半径；在转子加工制造许可的范围内，可以通过调整转子轴衬的半径和偏心距离来减少摩擦磨损对微电机的影响，随着转子所承受载荷和转子旋转速度的增加，其磨损严重；接触区的应力分布不同于经典Hertz解，这是由于应力集中出现在不连续的曲率线上，且接触区的接触压力呈现轴对称抛物线状分布。

The morphologies and purity of CNTs obtained at different temperatures in the range of 700℃-850℃ were investigated. At the optimal decomposition temperature 770℃ the pure product shows uniform diameter, small curvature and high yield. The more important thing is that there is no unremovable oxide support in the products, which represent the excellent properties of MCNTs.

发现在最佳裂解温度770℃下制备的多壁碳纳米管直径分布均匀、曲率小、纯净、产率高，更重要的是不具有难处理的氧化物（如Al2O3）载体，充分体现了碳纳米管作为载体的优越性。

Especially, the difference of the nearest-neighbor hopping integral is due to the effect of the curvature of the carbon nanotubes. So, in fact there is a very narrow energy gap near the Fermi energy of unsquashed metallic zigzag carbon nanotubes, and, a slighter deformation is required to open a considerable energy gap in metallic zigzag carbon nanotubes than that in armchair nanotubes.

特别是，最近邻格点之间的跃迁积分的变化与碳纳米管的曲率紧密相关，因此实际上，理想金属型 zigzag 碳纳米管本身具有微小能隙，而施加比 armchair 碳纳米管小的多的压缩量，就可以使金属型 zigzag 碳纳米管在费米能处打开相当的能隙。

6Hyperboloid initiative gear wheel axle assign above driven gear centre, easy to realize many axle transaxle well versed in, increase the height of unsticking of the drive shaft.

3双曲面齿轮传动的主动齿轮直径及螺旋角都较大，所以相啮合轮齿的当量曲率半径较相应的螺旋锥齿轮为大，其结果使齿面的接触强度提高。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐