查询词典 direct method

By using the solutions of a new auxiliary elliptic equation,a direct algebraic method is proposed to construct the exact solutions of some nonlinear evolution equations.The main difference between this method and previous auxiliary elliptic equation methods is that the balance order becomes smaller after using the new auxiliary elliptic equation.Therefore,the derived algebraic equations are greatly simplified.

利用一个新的辅助椭圆方程将求解非线性发展方程精确解的问题转化为一个代数方程组进行求解，与已有的辅助椭圆方程法的主要不同是，应用这一新的辅助椭圆方程后降低了平衡次数，减少了所得的代数方程组的个数和方程的项数，从而大大地简化了代数方程组的求解。

An empirical method is taken to investigate the accuracy and stability of the axisymmetric direct boundary integral method.

本论文采用一种实验的方法考察了轴对称情形下直接的边界积分法的精度和稳定性。

The thesis first probably explains BrushLess Direct Current Motor, and discusses the related control methods, explains the background and Meaning of back electromotive force which is used in the thesis.Then the thesis expounds the basic component parts,the basic running principle,the running characteristic and transfer function of the BLDCM.And then the thesis detailedly dissertates its research pivot: the simulation of BLDCM system in MATLAB based on the method of Back-EMF and the control system of Digital Signal Processor based on the method of Back-EMF.

本文首先对无刷直流电机进行了概述，并对其相关控制方法进行了讨论，说明本文所采用反电动势法的背景和意义；接着论述了无刷直流电机基本组成环节、基本工作原理、运行特性和传递函数，然后是详述本文研究的重点：基于反电动势法的MATLAB调速系统的仿真以及基于反电动势法的DSP控制系统的实现。

For two kinds of servo systems that the output can be directly measured or not directly measured, the direct compensation method and the BP neural network compensation method for backlash nonlinearity were presented. Simulation results for a tank barbette tracking system show that these two kinds of compensation methods can successfully eliminate the influences produced by backlash nonlinearity, and improve the system accuracy.

针对输出直接可测和不直接可测两种伺服系统，提出了间隙非线性的直接补偿法与BP神经网络补偿法，对坦克炮塔跟踪模型进行的计算机仿真表明这两种方法均可成功消除间隙非线性引起的极限环，提高系统精度。

The structure and primary parameters of direct-detection Doppler lidar are described. The beam scanning method of atmospheric wind measurement is given,and computing formula of the three dimension wind filed is derived. The solution method of errors of wind velocity and wind direction is presented.

介绍了直接探测多普勒激光雷达的系统结构和主要参数，给出了该系统进行大气风场测量的光束扫描方法，详细推导了三维风场的计算公式，给出了其风速和风向误差的求解方法。

The most-used numerical method for solving direct boundary integral equation is collocation method, which is simple and faster. Seldom have been used the Galerkin scheme in this case.

一般来说，直接边界积分方程可以很方便的用配点法求解，还未见有实际用Galerkin边界元来解的报道。

Based on the analysis of the characteristics of the compensation directions for boundary curves in rapid prototyping direct slicing, a new method, which can determinate the compensation direction by converting the boundary curve to beeline polygon, is proposed. The geometric signification of the polygonal method is demonstrated.

在分析快速成型制造中直接切片真实边界曲线补偿方向特点的基础上，提出了一种将曲线边界转化为直线多边形进行补偿方向判定的方法，幷阐述了该判定方法的几何意义。

Methods: The method used direct sampling technique to determinate chloroform, bromodichloromethan, dibromochloromethane, bromoform, which was seperated by tube column, detected by electronic capture detector and determined by inner standard method.

水样直接进样，用毛细管柱色谱分离，电子捕获检测器检测，采用内标法定量，可同时测定水中三氯甲烷、一溴二氯甲烷、二溴一氯甲烷和溴仿。

Taking as research method, field work as "the special skill" of the ethnology, also no doubt is the important research method of this article. Gaining the first material through different forms of visiting, talking,investigation and so on, has made the historical materials and field work double win. The historical literature is the direct foundation of tracing the nationality source and studying with textual. The history data of local chronicle, history book, genealogy, genealogy, etc. can make field date and literature date bring out the best in each other.

从研究方法而言，田野调查作为民族学的"看家本领"，无疑也是本文的重要研究方法，通过访谈、调查、走访等不同形式获取的第一手资料奠定了材料和立论的可信度；历史文献是追溯族源、考究历史的直接依据，地方志、史书、(来源：A4acaBC论文网www.abclunwen.com)族谱、家乘等史料使得田野资料和文献资料相得益彰；对白族的任何研究，如果脱离它与大理白族的联系孤立开展，将带有很大的局限性，因此联系的观点和比较的方法也是本文的重要方法。

Aiming at the mathematic model of shafting crankle coupling vibration based on the subsection continuous mass model,the multidimensional frequeney analysis method is put forward and developed.Combining frequency change with shafting configuration parameter,it's more favorable to have direct analysis.The method...

针对基于分段连续质量模型的轴系弯扭耦合振动数学模型，进一步简化并提出多维频率分析方法，将频率变化与轴系的结构参数联系起来，有利于直观分析，同时给出分析振型、共振频率及共振模态等的方法

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。