查询词典 differential axle

Two basic theorems are given by researching Hamilton's two steps linear differential equations of bender equations which provide widespread application methods of normal differential operator correspond to ladder operators,then the solutions of general equations are obtained by taking advantage of the two above theorems: The energy eigenvalue equation of one-dimensional oscillator; the common state of ; the radial equation of a bondage state of hydrogen atom; the radial equation isotropic three-dimensional harmonic oscillator; the infinity deep potential well of ball

本文通过研究束缚态本征方程里的哈密顿算符的二阶线性常微分形式，给出两个基本定理并证明，提供构造二阶线性常微分算符相应的阶梯算符的普遍实用的方法，然后利用这两个定理构造量子力学中常见力学量的阶梯算符，并用以计算其能量本征值和对应本征函数：一维谐振子的能量本征方程；共同本征态；氢原子束缚态径向方程；三维各向同性谐振子的径向方程；无限深球势阱。

Firstly, proem, it concise introduces the background ; Secondly, it introduces the reform of the commission system and the dilemma of the securities companies in our country; Thirdly, it puts forward the idea of implementation of "Optionally differential strategies " as the natural choice for the future development of the securities brokers in our country , through the analysis of the current competitive environment of the securities companies in our country and study on the alternatives of competitive strategies ; The forth , it describes how to practice " Optionally differential strategies",which including three aspect: the choice of the core competition ability, the measures for the implementation are brought forth ,and the condition of practice the strategies; The fifth, it s the summary of the dissertation.

第一部分，简介论文写作背景；每二部分，介绍我国佣金制度改革以及改革后我国证券公司所面临的困境；第三部分，通过对现阶段我国证券公司竞争环境的分析，进行竞争战略选择研究，提出实施选择性差别化战略应成为我国证券商未来发展的必然选择。第四部分，提出"选择性差别化战略"的实施措施，包括拓展业务领域、拓宽交易渠道及改革证券商管理模式三方面可操作的内容；第五部分，对全文作概括性的总结。

A modified differential evolution algorithm was presented. In the proposed algorithm, the difference vector, which is employed in mutating each individual by simple differential evolution algorithm, was recorded. Each mutated individual was taken as the center of a neighborhood, the corresponding difference vector as radius.

提出了一种改进的差分演化算法，该算法记录下了差分演化算法在对每个个体进行变异操作时的差向量，然后以被变异的个体作为邻域的中心，以所记录的差向量作为邻域的半径，再在这个邻域内进行一次挖掘式的搜索。

METHODS The partial differential equation is reduced into a set of ordinary differential equations by using finite difference method.

采用有限差分方法，将偏微分方程组约化为常微分方程组。

By using Galerkin's method the partial differential equation is reduced ordinary differential equation with quadratic nonlinearity.

对于非线性运动方程，我们引入了外加强迫力和阻尼对系统的摄动，借助Galerkin方法从非线性偏微分方程得到了含二次非线性的常微分方程。

By using Galerkin's method the partial differential equation is reduced ordinary differential equation with quadratic nonlinearity. The results of qualitative analysis indicate that the system has homoclinic orbit.

定性分析表明，对于前屈曲和后屈曲两种情况，系统的相图具有相同的同宿轨道，只是位置在相平面上沿横轴发生了一个简单的平移。

Fractal dimension structure of the Cosmos are explored, and the mathematical foundation, which include the expressions of fractal dimension differential and calculus, regular space integral solutions of fractal dimension differential equations, the fractal calculus definitions of fractal measure as well as the measure computational equation of self-similar fractal, of fractal dimension calculus and fractal measure are given.

摘 要：探讨了宇宙分维构造的形式，给出了分维微积分及分形测度的数学基础，包括分维导数及分维微积分的表述形式、分维微分方程的规整空间积分解、分形测度的分维微积分定义及自相似分形的测度计算方程。

Around the finite solution problem of fuzzy differential equation, the fuzzy structure element method is put forward about the calculation of fuzzy analysis, and this method is applied to systematically study many problems such as formulation of fuzzy-valued function, difference of fuzzy-valued function, integration of fuzzy-valued function under the Riemann meaning, and the solution structure of fuzzy differential equation etc..

围绕模糊微分方程定解问题，提出了模糊分析计算的模糊结构元方法，并利用模糊结构元的方法对模糊值函数的表述问题、模糊值函数的微分、黎曼意义下的模糊值函数积分以及模糊微分方程的解的结构等问题，进行了深入系统的研究。

Firstly,using the method of concentrate mass this paper establish a non-linear dynamics model of a two-stage gear train with backlashe between the gear pair,and through analysed the dynamics model,the torsional motion differential equations are got , on this basis,then calculate the torsional motion differential equations using Runge—Kutta method ,and discuss how to influence the dynamics characteristic of system when these parameters chage such as mesh frequentcies、 stiffness of the intermediate shaft、the ration of mesh frequentcies.and discuss when the chaos will happen under the change of these parameters.

首先用集中质量法建立系统的含间隙的非线性动力学模型，并根据牛顿力学定理，得到系统的运动微分方程。然后对所建立的运动微分方程运用四阶变步长Runge—Kutta方法进行了求解，并对计算结果进行分析，研究了齿轮啮合频率、中间联接轴的刚度，一、二级齿轮的啮合频率比等参数变化时，对系统非线性动力学特性的影响规律，并讨论了当参数如何变化时会导致系统的混沌响应的出现。

In addition, making use of the complete calculation of internal faults, some merits, such as scientifically setting the new scalar product restraint differential protection, exactly selecting the type of current transformer for zero-sequence current transverse differential protection and accurately understanding the backup impedance protection, are acquired at the same time. And these achievements contribute to the realization of the above quantitative design.

另外，通过全面的内部故障仿真计算，实现了新型差动保护方案动作特性的科学整定、零序电流型横差保护用TA的准确选型以及对后备阻抗保护性能的正确认识等，而这些工作的完成又是定量化设计成果得以实现的有力保证。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。