轮廓

Have put forwarda characteristic boundary contour model for an atom in a magnetic field has been established.

根据原子边界轮廓理论模型，研究和计算了在10~30T磁场强度下碱金属原子的边界轮廓，可供有关参考。

The present paper is intended to offer a method that can be used to revise measured value of cam outline according to the identified mounting eccentric magnitude of the camshaft,as well as the given base circle radius of the cam.

凸轮轴在检测仪上的安装偏心量会影响凸轮轴上凸轮廓形尺寸测量的准确性和复现性。本文提出了根据辨识获得的安装偏心量和已知的凸轮基圆半径来修正凸轮廓形测量值的方法。此方法在实际测量中获得了满意的效

It has provided not only a way of quickly distinguishing between an artificial object and a natural object, but also a way of getting the rough contour curve through the changes in chain code.

提出了利用计算物体轮廓分形维数的方法区分人工目标和自然物体的快速识别方法，给出了通过链码的变换得到待识别目标的轮廓粗糙性曲线的具体算法。

The contour curve is obtained with Sobel operator, and thus the angel of the contour curve of needlepoint image can be computed.

通过Sobel算子和曲线拟合得到输液针图象的轮廓曲线，并进一步计算出输液针图象的外轮廓角度。

The result shows that the convergence of active contour curve is not only depended on the image gradient,but also the target region.

简单地讲，主动轮廓模型是一条由相应能量函数控制的可形变参数曲线，以能量函数最小化为目标，控制曲线变形，具有最小能量的闭合曲线就是目标轮廓。

Based on periodic Daubechies wavelet coefficients feature of the description function, the global matching problem and the local matching problem of the contour curve are discussed.

摘要利用形心点和Aggarwal的形殊点，定义了轮廓形状的描述函数和起始点，并运用描述函数的Daubechies周期小波系数特征，讨论了闭合轮廓曲线的整体匹配和局部匹配问题。

This paper takes account of the several factors including the contour curve of cam,the accuracy of motion, structure size and the time of normal work of cam mechanism by discussing the relationship between the roller radius and contour curve ,the touch-stress between the roller and cam, the thickness of lubricant film.

以凸轮机构的凸轮轮廓曲线、运动的准确性以及结构尺寸和寿命为考虑因素，讨论了凸轮机构从动件滚子的半径与轮廓曲线、凸轮高副的接触应力以及润滑油膜厚度等的关系，提出了滚子半径的选择原则。

Firstly edge detection method for cross-sections is expatiated, and a B-spline active contour based on adaptive FEM is proposed to fit the digital contour curve.

首先对断层图像的边缘提取方法进行了论述，针对得到的截面轮廓数字曲线，提出了一种基于自适应B样条主动轮廓拟合方法。

In this dissertation, based on the systematically analysis of theory and application research on deformable model, a new B-spline active contour based on the finite element method is proposed; then B-spline active contour is applied to fitting the digital curve cross-sectional contour, and adaptive FEM is adopted to improve the precision; lastly the model is generalized to 3D, and a B-spline active surface model based on FEM is proposed.

本文在系统地分析了国内外关于可变形模型理论与应用研究的基础上，提出了一种基于有限元法的B样条主动轮廓模型；并将其应用于由断层图像导出的截面轮廓数字曲线的拟合，利用自适应有限元技术提高拟合精度；最后将其推广到三维，提出了基于有限元法的B样条主动曲面模型。

In addition, this thesis also simulates the movement of the mechanism by simulation method based on Pro/E software. The design error of the head of linking board in the mechanism δ_1 and the initial position error of the cutting torch δ_2 are selected and compared.

为了让操作人员更直观的了解了该机构的运行原理、机构设计和使用方法，本文还运用3DS MAX软件制作了两个演示动画：第一个动画演示了回转机构的割枪作以割嘴为固定点的定心圆锥摆动；另一个演示了整个机床切割矩形轮廓和圆形轮廓时的运动情景。

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