曲率

Planar discrete clothoid splines and discrete clothoid spline surfaces of Schneider and Kobbelt are just constructed by assuming that the curvature of the curves or surfaces is piecewise linearly distributed.

Schneider和Kobbelt的平面离散布状样条曲线和封闭控制网格上的离散布状样条曲面正是利用曲率逐段或逐片线性分布构造出来的。

Multi-scale CODON and Natural scales are presented to solve the problem of noise in differential operator.

同时提出了自然尺度和多尺度CODON特征的概念，以克服基于曲率运算的CODON编码对噪声的敏感性。

Besides, as to inpainting problem in wavelet domain, we introduce a new iterative model. In this model low frequency and high frequency will carry on processing separately, enormous speed up the image repair convergence rate, and even if as high as 90% wavelet coefficient have been lost, this model will also be able to have the very good repair effect. In the old model, to compute the curvature we have to transform the coefficients to the pixel domain, and then transform back to the coefficient domain for several times and this method can solve this problem and speed up the iterative convergence.

其次针对小波域中图像修复的问题，本文提出了一种新的小波域图像修复模型，该模型根据小波变换后系数相关性的特点，将低频和高频分别进行处理，极大的加快了图像修复的收敛速度，并且即使丢失高达90%的小波系数，该模型也会有很好的修复效果，有效的解决了传统的TV- Wavelet模型在计算图像的平均曲率WCURV时，需要反复进行小波分解与重构的计算，迭代速度慢的问题。

If singular value curve is convex in the coordinates 'k' of maximum peak of curvature spectrum, then the number of effective singular values is k; if singular value curve is concave in the coordinates 'k', then the number of effective singular values is k-1, and this rule is tested by the signal processing examples.

如果奇异值曲线在曲率谱最大峰值的位置坐标k处是凸出的，则有效奇异值的个数为k；如果奇异值曲线在k处是凹进的，则有效奇异值的个数为k-1，通过信号处理实例证实了这种结论。

The hybrid gel film on curved surface can replace traditional light-sensitive lacquer, and improve the grating's stability. The VLSG with the line density of 80l/mm was fabricated on a concave lens surface with curved radius of 100mm.

采用这种方法在曲率半径为100mm的凹球面基底上制作了平均线密度为80l/mm的光栅，并用环境扫描电镜以及数字图像处理法检测了光栅的线密度分布。

By a concave spherical mirror and the mirror curvature center is located in a very close parallel plate of non-spherical corrections boards.

由一个凹球面反射镜和位于反射镜曲率中心的一块很接近平行平板的非球面改正板组成。

In the experiment,a He-Ne laser with waist of 0.6 mm is utilized to adjusting a plane-concave resonator with a concave mirror in a radius of 50 mm at measuring distance of 889 mm.

实验使用束腰为0.6 mm的氦氖光，其后加一优化好的透镜系统，在889 mm的距离下，对凹面镜曲率半径为50 mm的平凹腔进行对准。

When the cavity length is 140 cm and the radius of curvature of the full-reflective concave mirror is 300 cm, the Nd:YAG laser is operated in the stable mode-locking and a pulse train with 27 mJ energy and 35 ps pulse duration is obtained.

当腔长为140 cm，全反射凹面镜曲率半径为300 cm时，激光器运转在稳定的被动锁模状态，输出的锁模脉冲序列能量为27 mJ、脉宽为35 ps。

The changes of curvature in concavo-convex surface resulted in great non-uniform paint deposition when speed was constant.

针对表面有凹凸结构的复杂曲面，采用匀速喷涂方法，曲面上曲率的变化造成涂层厚度差较大。

Interaction is the cause of formation of dynamics of structure,with curvature pattern being the concretion of theoretical structure of quantum mechanics.

相互作用是结构的动力学成因，曲率模型是量子力学理论结构的具体化。

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