查询词典 characteristic equation

In the paper a function of crowd psychological characteristic is given, the equation of sense and multiplicator is developed, and the mechanism of how domestic economical crisis be shaped and how the international ones infect each other is exploited.

提出公众的心理示性函数，阐述感知、预期乘数概念，以解释国内经济危机的形成及国际经济危机的传导机制。实证研究结果进一步证实了感知方程和心理示性函数的意义

Chapter 4 gives characteristic finite element methods for natural convection problem and Navier-Stokes equation.

第四章给出自然对流问题及Navier-Stokes方程的特征有限元算法。

This paper presents an I-V equation that is available in the whole on-state region by numerical simulation, and creates the I-V Characteristic Macromodel.

因此在数值模拟的基础上提出了全导通区域的伏安特性方程，建立了LDMOS I-V特性的宏模型。

The optimal step size equation is derived according to LMS algorithmic. In light of the fact that the position of the resource of working-noise changes frequently and the acoustic characteristic of coalseam varies with the proceeding of mining, the thesis models the change of response function by single delay estimation in DCT domain to raise the filtering capability.

论文在 叙述LMS算法原理基础之上推导了最佳收敛步长的求解公式，给出了DCT-LMS自适应算法；根据井下作业噪声源位置是经常变化的以及巷道声特性随开采进程而发生变化的特点，提出采用DCT域的延时估计提高井下作业噪声滤波性能。

Those new methods are based on Jacobsons theory and its characteristic structure which make the problem equivalent to a 2 x 2 matrix polynomial equation with diagonalizable solutions.

1新方法及其比较主要介绍了求解四元数多项式方程的两种传统方法和两种新的方法，并在分析过程中进行了对比。

The characteristic of primary arc is analyzed, and the dynamic model of primary arc is established. The line differential equation including primary arc voltage is constructed, and the parameter estimation technique is used to estimate the voltage amplitude of primary arc, so as to determine the fault type and realize adaptive three-pole-autoreclosure.

分析了一次电弧的特点，建立了一次电弧的动态模型，利用一次电弧的特点建立了包含电弧电压的超高压输电线路相间短路的线路微分方程，通过参数估计的方法求得故障点的电弧电压，以判断故障类型，实现自适应三相重合闸。

This text proceed with the theory of the vibration, utilize typical elastic hinge law analyze structure dynamics characteristic when the blade is quivered to instability, and then use relevant knowledge of blade vibration to simplify the model and the aerodynamic force of the vibration. Through the simplification, we can get the equation of the blade, which is dispersed to its instability. Then VISUAL BASIC procedure is utilized to work out thecharacteristic value of vibration and the vibration frequency. At last comparing the result which is calculated by the above-mentioned theory formulae with the result which is calculated by internationally agreed procedure ANSYS to verify the accuracy of the formula of reduction.

本文从振动理论入手，利用最为典型的弹性铰链法分析叶片发生颤振失稳时的结构动力学特性，然后对振动模型及振动时所受的气动力进行简化，利用简化方程得到叶片发生发散失稳时的振动方程，利用编制的VISUAL BASIC程序解出振动的特征值并得到振动频率，最后分别通过上述的理论公式和国际通用的有限元程序ANSYS对风力机叶片模型进行发散失稳时的频率计算，验证简化公式的准确性。

In discussing the properties of reflection and refraction of fiber grating, the coupled-mode equation, envelope function, transform matrix formalism, multilayer and optical path approximation are used for describing the linear and nonlinear characteristic of optical fiber grating.

在分析光栅的反射和透射规律时，采用了耦合模式法，包络函数法，转换矩阵法，多层介质薄膜法以及光程法，这些方法虽然具有不同的数学和物理模型，但在分析光纤光栅这一特殊的波导结构时，可充分展现它的线性和非线性特性。

Using the characteristic of the regular curve boundary for a bending plate in engineering,the analytic integral formulae of assistant states in boundary element method with the linear element for a Kirchhoff circular plate are introduced and the systematic equation of BEM is established in this paper.

利用一般弯曲薄板边界为规则曲线的特点，对工程常用的圆形弯曲薄板，采用线性单元，导出K irchhoff圆板各辅助态的边界积分解析表达式，建立问题的边界元法系统方程，从而使薄板的边界元分析完全避免通常使用的高斯积分，明显提高计算精度。

The structural relaxation parameters of PES-C are obtained by curvefitting of experimental datas according to KWW equation and NMphenomenal model. These parameters are limiting enthalpy relaxation 〓,non-exponentiality parameter β, characteristic relaxation time log 〓,non-linearity parameter x, and so on. It is found that the structural behaviorhas a strong dependence of the change of molecular weight for differentmolecular weight PES-C samples.

我们用分子链段的运动性随分子量的变化对此作了解释，同普通柔性链高聚物相比， PES-C的分子链的中间部分所受的限制更为强烈，相对只有链端部分可以相对自由运动。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。