级数的

Via the stochastic averaging method, the four-dimensional system is reduced to a two-dimensional one. Through the logarithmic polar transformation , and then Girsanov theorem and Feynmann-Kac formula, the backword differential operator is then obtained. By expanding the eigenfunctions as a Fourier cosine series, the approximate analytic expansion of the moment Lyapunov exponent is then obtained.

首先在经典二元机翼颤振方程加入随机激励，通过随机平均法，Girsanov定理和Feynmann-Kac公式得到关于矩Lyapunov指数的特征值问题，其次采用Fourier余弦级数对特征函数进行正交展开得到系统矩Lyapunov指数的近似解析式。

The comparison of operating time of dynamic accumulation cyclic operation with the optimal constant reflux ratio operation was also made in this paper.

为了确定动态累积循环操作的适宜应用范围，本文比较了动态累积循环操作与优化分段恒回流比操作，讨论了进料浓度、相对挥发度、理论级数、进料量对两种操作方式的影响。

The number of the extreme point can be efficiently extracted by use of the method and the number of the dark fringe can be obtained.Then the measurement of the chip warpage can be achieved.

由灰度曲线的极小值点个数得到暗条纹级数，从而获取芯片相对于基准面的翘曲程度，完成芯片的翘曲度测量。

Then, the two-dimensional point target spectrum is derived by the method of series reversion.

结合级数反演法，得到了弹载 SAR 回波信号的 2 维频域的精确表达式。

Hensel in a paper which was concerned with the development of algebraic numbers in power series. In the beginning, they were used mainly in number theory.

Hensel于1898年在一篇关于代数数在幂级数中的应用首先引入，初期还只是集中应用于数论方面的研究。

A conclusion that any random Dirichlet series of finite order almost surely do not have deficient function is proved.

本文研究了非常一般的随机变量序列决定的全平面上的随机D irichlet级数，得到了相应结果。

The paper studies the Dirichlet series of finite order in the half plane, proves several theorems on their order and low order .

研究了半平面上有限正级 Dirichlet级数，证明了几个关于它们的级与下级的定

According to the creep characteristic of concrete,the exponential function was selected as base function,which could construct the prevalent Dirichlet series so as to fit creep coefficient .

根据砼的徐变特性，选用指数函数作为基函数，构造了最普遍的Dirichlet级数形式来拟合徐变系数。

There are many important mathematical analysis of elementary function is through the function series and definition of parameter improper integral.

数学分析中有许多重要的非初等函数是通过函数项级数以及含参量反常积分定义的。

Firstly, according to the Laplace equation of ellipsoidal coordinates and the ellipsoidal harmonic functions in common use, the ellipsoidal series expansion of harmonic functions outside the referential ellipsoidal is introduced.

论文首先从椭球坐标的Laplace方程和常用的椭球谐函数出发，介绍了参考椭球面外调和函数的椭球谐级数展开。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。