对角线方法

The theory and algorithm of 3D graph display and reconstruction is studied, including the synchronous contour matching algorithm, MC method, projection-based method, Delaunay triangulation, shortest diagonal method and maximum volume method. And the method of extraction of the color edge of 3D color data is proposed.

分别以同步轮廓线前进法、MC法、基于投影法、Delaunay三角法、最短对角线法、最大体积法研究三维图形显示、重建的理论和算法，提出三维彩色数据颜色边界提取方法。

Methods The tissue images obtained by ultrasonic examination experienced color conversion with Photoshop, and the corresponding relation between the wavelet coefficient and the local image characteristic after conversion was then analyzed, i.e. the row details in line sequence, the line details in row sequence and the diagonal details in Z sequence.

方法将超声获取的图像组织，再经Fhotoshop技术色彩变换和变换后小波系数与图像局部特征的对应关系进行分析：即行细节按列排序，列细节按行排序，对角线细节按斜Z排序。

MethodsThe tissue images obtained by ultrasonic examination experienced color conversion with Photoshop, and the corresponding relation between the wavelet coefficient and the local image characteristic after conversion was then analyzed, i.e. the row details in line sequence, the line details in row sequence and the diagonal details in Z sequence.

方法将超声获取的图像组织，再经Fhotoshop技术色彩变换和变换后小波系数与图像局部特征的对应关系进行分析：即行细节按列排序，列细节按行排序，对角线细节按斜Z排序。

Moreover, when the normalized damping matrix is diagonally dominant, it is strictly shown that decoupling the modal equations by neglecting the off-diagonal elements indeed minimizes the error upper bound.

同时，还严格地证明了，当正则化的模态阻尼矩阵是对角占优时，由忽略其非对角线元素使模态方程解耦的方法所引起的误差的上限的确能达到最小。

By means of similarity transformation upon the state matrix, an upper triangular matrix or lower triangular matrix is found. The eigenvalues of the original system can be obtained through a series of low-dimension matrixes over the principal diagonal.

该方法对系统状态矩阵进行相似变换，得到分块上三角或下三角矩阵，使原系统特征值可以通过主对角线上一系列相互独立的低维矩阵求得。

This method ensures the integral request along the main diagonal of Aumann-Shapley value formula, and realizes the reasonable sharing of the security cost between consumers and power suppliers and between the bilateral transactions of using the congested line.

该方法保证了Aumann-Shapley值求取公式中沿主对角线积分的要求，使安全成本可合理地分摊给各个用户和发电商，以及使用阻塞线路的双边交易。

This approach is base on the following idea:under not effect to the deformation of rectangular pipe,to change right angle to obtuse angle which is variant as some regular,make plain-barreled roll pass receive vertical roll shape pipe blank,and then let pipe blank entering into vertical roll pass.With continuous deformation, the difference between diagonal line of rhombus pass will be reduced to zero,finally changed into a square.

该方法的基本思路是：在不影响方矩形管变形的前提下，通过将孔型顶角由直角改为按一定规律变化的钝角，让呈卧菱形状的平辊孔型接纳呈立菱形状的管坯，接着让卧菱形状的管坯进入立菱形状的立辊孔型，随着变形的继续，逐渐缩小菱形孔型对角线之差直至为零，成为正方形。

The belayed crossing is made by the first wader tying in and crossing in a diagonal downstream path. He may lean against the rope for support.

有确保的横渡是当先锋渡溪者要横渡溪谷对角线时所用的方法，他可以靠向绳子的方向以增加支撑力量。

The breeding values of 12 dairy bull, were evaluated by BLUP method, and the parameters μ, h_i, g_i, S_(jk were obtained by using computer. Comparing this evaluation with thnt of not using relationship matrix, there are some difference between them. In the calculation, A~(1-)should be added to the elements of bull, effect on the diagonal of matrix.

本文以南京市12头乳用种公牛(其中引进上海市6头、合肥市1头的冻精)为实例，应用公牛间有亲缘关系的BLUP法估计其育种值，电算求得参数μ、h_i、g_i、S_(jk，按育种值排列优劣名次，并与不加入公牛间亲缘关系的结果进行比较，发现两法间略有差异，其计算方法在矩阵对角线的公牛效应元素上加A~(1-)(即公牛间亲缘关系的逆阵)即可。

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