查询词典 successive approximation

D resistivity forward modeling ; Finite-element ; Secondary potential ; Symmetric successive overrelaxation ; Conjugate gradient.

电阻率三维正演；有限元；异常电位；对称超松弛；共轭梯度

Firstly, the three-dimension boundary question and its corresponding variation question concerning the point-source electrical field on a 3-D structure are presented. Secondly, the finite element method is used to solve the variational equation. The study area is divided into many tetrahedral elements. Then, we interpolate with a tri-linear function in each element. So, the variational equation is converted into a linear equation system. Finally, taking into account saving of time, we make use of symmetric successive overrelaxation preconditioned conjugate gradient algorithm to solve large linear system, and obtain the potential value of each node, resulting in the calculation of the apparent resistivity values on the ground surface.

首先给出了三维构造中点源电场的边值问题以及相应的变分问题；然后利用有限单元法求解变分问题，采用四面体单元对研究区域进行剖分，在单元中进行三线性函数插值，将变分方程化为线性代数方程组；最后，考虑到节约计算时间，利用对称超松弛预条件共轭梯度迭代算法求解大型线性方程组，得到了各节点的电位值，进而计算出地表的视电阻率。

In this study, symmetric successive overrelaxation preconditioned conjugate gradient algorithm is used to solve large linear system derived from 3-D finite-element resistivity forward modeling. Using row-indexed sparse storage mode to store coefficient matrix, the algorithm converges much quickly and requires much less storage of computer.

引入对称超松弛预条件共轭梯度迭代算法求解电阻率三维有限元计算形成的大型线性方程组，并有机结合系数矩阵的稀疏存储模式，使得三维有限元正演计算的速度大大提高而内存需求则大大减少。

A fourth-order compact finite difference alternating-direction-implicit algorithm is proposed for solving the unsteady-state Navier-Stokes equations of fluid flow and heat transfer using the streamfunction-vorticity formulation. Point-successive overtaxation iteration is used to achieve the steady solutions.

本文构造了求解二维非定常涡量流函数形式Navier-Stokes方程组的一种四阶紧致交错方向隐式差分算法，对包括能量方程在内的离散化方程组采用逐次超松驰迭代法求得稳定解，求解了二维非定常粘性不可压缩流体的流动与传热问题。

The Treviso-born star joined Juventus FC in 1993 after just 14 games for Serie B club Padova Calcio, and quickly became an integral part of a team whose attack also boasted the holy trinity of Roberto Baggio, Fabrizio Ravanelli and Gianluca Vialli. As Del Piero matured, his dazzling runs and free-kicks helped the club to three successive UEFA Champions League finals; he was part of the team that defeated AFC Ajax to win the 1995/96 edition but he also played in two subsequent final defeats, against BV Borussia Dortmund in 1996/97 - when Del Piero scored a fantastic back-heeled goal - and Real Madrid CF the following year.

这个在特雷维索出生的明星在1993年代表意乙级的帕多瓦参加了14场比赛之后加盟尤文图斯，并且很快成为这个以由Roberto Baggio， Fabrizio Ravanelli and Gianluca Viall组成的令人羡慕三人组为前锋的队中不可缺少的一部分，随着DEL PIERO的成熟，他眼花缭乱的跑位和任意球帮助球队三次进军欧洲冠军联赛的决赛，他是在996/1997赛季击败阿甲克斯的获得冠军的成员，但是也是在接下来的2次失败的决赛的成员，分别是1997/1998赛季决赛对多特蒙德的比赛，尽管在比赛中进了一个美妙的脚后跟进球，和接下来对皇家马德里的决赛。

The information sex production that is core in order to innovate and productivity category are pair of traditional production and productivity category is successive with development, have great academic sense and practice sense.

以创新为核心的信息性生产与生产力范畴是对传统生产与生产力范畴的继承与发展，具有重大的理论意义和实践意义。

He is the only Prime Minister since Pandit Jawaharlal Nehru to have become Prime Minister of India with two successive mandates.

他是唯一总理潘迪特贾瓦哈拉尔尼赫鲁以来已成为印度总理与两个连续的任务。

Bit Single Scan Display Type A 4-bit single scan display uses 4 parallel data lines to shift data to successive single horizontal lines of the display at a time, until the entire frame has been shifted and transferred.

位单扫描显示方式 4 位单扫描采用 4 位并行数据线将行数据一次连续移出，直到整个帧的数据被移出为止。

Bit Single Scan Display Type An 8-bit single scan display uses 8 parallel data lines to shift data to successive single horizontal lines of the display at a time, until the entire frame has been shifted and transferred.

位单扫描显示方式 8 位单扫描采用 8 位并行数据线将行数据一次连续移出，直到整个帧的数据被移出为止。

Use subclass is patulous function when actually its successive meaning had changed.

使用子类扩展功能的时候其实它的继承意义已经变化了。

World War II: Battle of Saipan - Americans take Saipan.

1944年的今天，美国在塞班战役中拿下塞班岛。

When the scorner, the rejecter of truth, has become presumptuous; when the routine of work in the various money-making lines is carried on without regard to principle; when the student is eagerly seeking knowledge of everything but his Bible, Christ comes as a thief.{DA 635.3

当讥诮和拒绝真理的人，到了任意妄为时，当追求财利者罔顾按道义经营谋利时，当学人正在兢兢业业地研究各种知识，而单把圣经丢在一边时，基督要像贼一样来临。