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From the history of Matrix and Transformation and the development of curriculum at home and abroad, putting matrix combined with the transformation, and orienting the study in 2×2 rank matrix, boosting matrix up the geometrical visualization as a algebra objects are a new perspective on knowing matrix.

从矩阵和变换的历史发展过程和国内外矩阵和变换的课程设置来看,把矩阵与变换相结合,并定位在2×2阶上研究矩阵,增强作为代数对象的矩阵的几何直观性,是认识矩阵的一个新视角。

A logicaldomain is used as a reference and the mesh movingis implemented according to an appropriate domain transformation.With sometraditional moving mesh methods,the meshes in physical domain may be tangled.To avoid this,the transformations are constructed based on harmonic mapping.Agood feature of the adaptive methods based on harmonic mapping is that existence,uniqueness and non-singularity for the continuous map can be guaranteed fromthe theory of harmonic maps.

在移动网格方法中,需要引进一个逻辑区域作为参考,网格的移动往往通过一个区域变换来实现,网格可能发生缠绕的问题是移动网格方法中一个一直没有解决的问题,我们利用调和映射来构造区域间的变换,使得变换的存在唯一生有了理论的保证,这就为避免网格缠绕打下了基础。

In order to overcome the aliasing phenomenon commonly existing in real contourlet transform image denoising, some characters of complex contourlet transform whose structure is a cascading of dual tree complex wavelet and directional filter banks are discussed. It is proved that the transform performs well at division and restraining ability under white Gaussian noise condition. Then, an image denoising algorithm was proposed based on the transform.

为了克服实轮廓波图像消噪后广泛存在的混叠现象,研究了基于双树复小波级联方向滤波器架构的复轮廓波变换图像消噪的若干性质,证明了对于高斯白噪声图像,该变换具有更好的分割能力和抑制能力,并在此基础上提出了一种基于该变换的图像消噪算法。

The fictive motions are complex, so they are further analyzed according to their inner situations. It is found that the fictive motions are the metaphor of the factive motions.

现实位移类的"向+NP"在不同句法条件下的变换问题讨论了作状语和作补语的"向+NP"的变换问题,简要分析了变换的一些限制条件。

An M operation is constructed in η-ξ spacetimewhich maps the system in region Ⅰ of the Lorentzian section onto the system inregion Ⅱ. The M operations on the fields lead to properties identical to those ofthe tilde operation.

在η-ξ时空中可以构造一个M变换,它将洛伦兹截面上一区中的系统变至二区中的系统。M变换对场的作用的性质正好等同于热场动力学中带弯变换的性质。

In this paper, We only analyse the projective transformation in3- Dimension space, explain the geometric significance of its column and row's correlation coefficient and give the method of changing the non-full rank projective transformation of3- Dimension to2- Dimension.

对三维空间中的射影变换加以分析,说明其行、相关系数的几何意义及将三维非满秩射影变换改为二维满秩射影变换的处理方法进行探索,这对计算机辅助设计中的图形处理和建立图形数据库是有利的。

The core idea of the method is to reduce the Hough cumulative dimension of the circle detection based on classical Hough transform, and convert the threedimensional statistical parameter based on the traditional circle Hough transform to two-dimensional parametric statistics about the center of a circle and one-dimensional statistical parameter about the radius of a circle.

给出了一种基于Hough变换的同心圆检测方法,其核心思想是降低经典Hough变换圆检测中的Hough累积维数,将经典Hough变换圆检测时的三维参量统计,转变成基于弦中点的圆心和半径的参量统计。

The propagation of electromagnetic pulses in uniform magnetized plasma is studied using the finite-difference time-domain method by means of Z transforms. The Z transform formulation of FDTD method is derived.

通过Z变换的方法,将与频率有关的磁化等离子体的介电常数由频域变换到Z域,推导了Z变换形式的时域有限差分法计算式,模拟了电磁脉冲在磁化等离子体中的传播。

The fictive motions are complex, so they are further analyzed according to their inner situations. It is found that the fictive motions are the metaphor of the factive motions.

现实位移类的&向+NP&在不同句法条件下的变换问题讨论了作状语和作补语的&向+NP&的变换问题,简要分析了变换的一些限制条件。

These matrices are the inversive constant ones and have the size as the same as the length of the signal.

利用基于推选体制的小波变换实现算法,构造出了与具有紧支集的双正交小波滤波器对应的小波变换和逆小波变换的算子矩阵,这些矩阵是大小与信号长度相等的可逆常数矩阵。

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

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我比喻得过头了。