级数的和

The potential functions of incident and scattered waves were expanded into Fourier-Bessel series, and the coefficients of scattering waves field were determined by imposing continuity conditions of stress and displacement at the soil-pile interfaces with the help of a set of cylindrical coordinate systems and in accordance with the Graff's addition theorem.

将倾斜入射波和散射坡的势函数展开成Fourier-Bessel函数的无穷级数的形式，利用一组圆柱坐标系统和Graff加法转换定理，通过施加桩土界面处的应力和位移连续的边界条件，求解出散射波势函数的待定系数，进而得到饱和土体中任意点的位移和应力。

This research has studied the validity of vector diffraction field series solution and nonparaxial approximate solution.

本课题研究了矢量衍射场的级数解和非傍轴近似解的有效性。

By using the tensor product of matrix, stride permutation matrix and matrix power series under the meaning of matrix direct sum, the parallel algorithm, including the scrambling algorithm, can be expressed integrally. This description provides a convenient tool for the study and application of parallel FFT algorithm.

本文提出了矩阵直和意义下幂级数的矩阵运算，同时利用迭代形式的矩阵方程将混合基FFT的并行算法及其数码倒置算法完整地表示出来，为并行FFT算法的研究和应用提供了方便的表示手段。

Based on the idea of the decomposition methods and Taylor series, the shape of an obstacle with the Dirichlet boundary condition is reconstructed.

基于分解方法和Taylor级数的思想，反演Dirichlet边界条件下的散射物边界形状。

The growth and the regular growth of this Dirichlet series of finite order are investigated.

研究全平面内的有限级Dirichlet级数的增长性和正规增长性。

However, the method by the double series...

并且，由于能计算级数的极限和的值，所以上述这方法在运算上很为简单。

By intercepting finite sum of the optimal control series, a suboptimal control law for the system is obtained.

通过截取最优控制级数的有限和获得原系统的前馈-反馈次优控制律。

This method is based on the time-varying Fourier coefficients series of the system variables,and focuses on the dynamics behavior of the Fourier coefficients.

为适应电力系统快速精确仿真和分析控制的需要，采用了一种新的建模方法—基于时变傅立叶级数的动态相量法，对电压源型直流输电进行建模和仿真。

By using this method we obtain two gen-eralized transformation formulae of q-integral form,two identities of basic hypergeometric series,as well as formal extensions for q-Pfaff-Saalschütz formula,q-Chu-Vandermonde identity and a three-term transformation formula of _3φ_2-series.

我们推广了两个q-积分形式的变换公式和两个有关基本超几何级数的恒等式，还得到q-Pfaff-Saalschütz公式、q-Chu-Vandermonde恒等式和基本超几何级数中一个有关_3φ_(2~-)级数的三项变换公式等的形式推广。

Ured out , an expanded equation for the current2limiting reactance is derived combining the magnetomotive force equations

在根据谐波要求确定了变压器式可控电抗器功率控制级数的基础上，把磁势平衡方程和支路

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。