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Based on the depth research on extension array manifold of uniform circular, for some uniform circular arrays which had subarrays with the nature of rotational invariance and had the nature of central symmetry two ESPRIT algo-rithms were presented, the first algorithm reduced one time of SVD, the second algorithm avoided parameter pairs.

在深入研究均匀圆扩展列流形的基础上,针对某些均匀圆的扩展列中含有旋转不变性的子列组以及中心对称性质,提出了2种基于均匀圆的二维ESPRIT算法,第一种算法减少了一次奇异值分解,第二种算法避免了参数配对。

As for the changes and transformations to control the enemy: Intermixed and turbulent, their fighting appeared chaotic, but their method was not disordered. In a nice flow of movement, from their deployment of circular transformation from square formation, their formation are not dispersed. This is what is meant by 'when they dispersed and become eight, reunite and again become one'.

等到分合变化打击敌人的时候,则旌旗纷纷,人马纭纭,战斗似乱而法不乱,部队行动,有如奔流,由方变为圆,而势仍然不散;这就是所谓分散开就成为八小,合起来就成为一大的说法。

This paper gives definitions of the closure operator, interior operator and complement operator in poset matroids, of which the underlying posets have an order-reversing involution, and then studies some properties of these operators.

本文将主要研究偏序集拟和模糊拟中的这些生成运算,要点及主要内容如下:一、给出了限制和收缩作用相等的一个充要条件,显示了秩函数在研究偏序集拟中的重要作用。

This thesis including four chapters: Chapter Ⅰ, Introduction: Chapter Ⅱ, bases and Circuits of Poset Matroids; Chapter Ⅲ, A Class of Functions Associated with Poset Matroids: Chapter Ⅳ, Dependence and Closure Operator of Poset Matroids.

本文包括四章内容,第一章,引言。第二章,偏序集拟的基和圈。第三章,一类与偏序集拟相关的函数。第四章,偏序集拟的相关性和闭包算子。

The vactrix method is further developed, a vectrix Skew-symmetric crossproduct identity is presented and the dyadic form of the derivative of a vector with respect to another vector in terms of vectrix is also offered.

进一步发展了矢方法,提出了矢叉积算子恒等式及矢量相对于矢量的导数以矢表示的并矢形式,并给出了若干应用实例。

A beamforming algorithm of array with virtual based on least squares estimator is presented, and the modified algorithm is proposed further. In this thesis, we also study the beamforming algorithm of array with virtual elements based on time delay and summation.

提出了基于线性预测的虚拟元波束形成方法,提出了基于最小二乘估计的虚拟元波束形成方法,并进一步提出了基于最小二乘估计的虚拟元波束形成方法的改进方法,最后研究了延迟求和虚拟元波束形成方法。

At the same time, they proved that a multipartite matroid is representable if and only if the corresponding discrete polymatroid is representable.

他们的工作具有令人振奋的结果:通过研究多部拟和离散多拟之间的关系,他们得到了多部存取结构为理想存取结构的一个必要条件和一个充分条件,并且证明了一个多部拟是可表示的当且仅当其对应的离散多拟是可表示的。

Firstly, an inverse eigenvalue problem for Jacobi matrices is presented: we could construct the Jacobi matrix T if we know the spectral data: the eigenvalues of T and the eigenvalues of T_1 and of T_2, where T_1 is different to the k × k leading principal submatrix of T only at the position, while T_2 is different to the × remain submatrix only at the (1, 1) position.

首先给出的是一类Jacobi的逆特征值问题,即给定三组实数:一组是Jacobi的n个特征值,一组是只修改了最后一个对角元的它的前k阶顺序主子的特征值,最后一组是修改了第一个对角元的后n—k阶余子的特征值,用这些给定的特征值来确定相应的Jacobi矩

You also will not take the散仙array, which is散仙array Huanglao the inaction doctrine evolved posture, when unable to approach local time散仙array is the most effective but the most direct and most迎敌secure way of their own five, but did not leave Honjin step, if rashly embattle restraint and just by the enemy, then it is really worth the.

诸位也不要轻视了散仙,这散仙本是以黄老学说无为而治的姿态演变而来,当摸不清地方的路数之时,散仙反而是最有效最直接也最稳妥的迎敌方式,五个人各自为政,却没有离开本一步,倘若贸然布又刚好被敌人克制的话,那就实在是太得不偿失了。

Round and rectangular piston transducers are the common sound source in ultrasonic nondestructive testing, and combination plane arrays of line and rectangular array are the foundation of investigating phased array technology, so simulating these sound field is significant for studying ultrasonic field simulation.

圆形活塞换能器、矩形活塞换能器是超声无损检测中常用的声源,而线列组合平面和矩形组合平面是相控换能器研究的基础,因而其声场的模拟在超声场模拟的研究中具有重要意义。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。