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According to the character of power system, this paper analyzes the digital spectral structure and representation of a sampled periodic signal and discusses the influence to the A.

但是，这种采样技术由于时基不准确，造成的各路A/D之间存在着不容忽视的延时误差，因此必然存在着非均匀采样现象。

Our preliminary data suggest that presbycusis in human might be related with stability decrease in spectral representation of central auditory neurons under stimulation condition of larger sound loads.

本研究的初步结果揭示，人类衰老过程中出现的听功能下降很可能与听神经元在大声负载条件下的时间表征稳定性下降有关。

To improve classification reliability, aGaussian Radial Basis Function is chosen on the Spectral Histogram Representation and the Support Vector Machines is used as classifying function.

为了保证分类的可靠性，选择高斯径向基函数进行谱直方图表示，采用支持向量机作为分类函数。

A combination of the wave superposition method and the modified spectral representation method is applied to a wind field simulation for whole bridge including the deck and the towers.

将谐波合成法与修正的谱描述法结合用于大跨度桥梁主梁及桥塔上的随机风场模拟。

In Chapter Ⅴ, we present a theoretical study of the dielectric behavior of cell suspensions by the Bergman-Milton spectral representation of the effective dielectric constant.

计算还发现即使在系统色散参数趋于零的情况下，表面周期结构也将会引进有效的色散关系，破坏表面模振荡频率的简并。

Dynamic characteristics of the two models are surveyed. By employing the POD-based spectral representation method, the turbulent wind-velocity field around the bridge is simulated and verified.

根据POD型的谱表示法模拟了桥梁的脉动风速场并进行了相关性拟合检验，然后基于准定常理论计算了作用在模型上的抖振力时程。

Secondly, based on spectral representation theory and self-consistent mean field approximation, we study temperature effect on optical bistability of metal-dielectric granular composite under strong external field in the dilute limit by in MG model.

在谱表示和自洽平均场近似基础上，用Maxwell-Garnett 模型研究了在稀释极限下的金属-电介质颗粒复合体在强场作用下的双稳结构的温度效应。

In consideration of large computational efforts of Deodatis simulation,a modified spectral representation method was proposed for simulating the fluctuating wind field of long span bridges.

针对现有Deodatis方法模拟大跨度桥梁空间脉动风场中存在的计算量问题，通过对谱分解矩阵引入插值近似，减少谱分解的次数，从而提高该谐波合成法的计算效率，并节省内存花费，实现了对三维空间脉动风场的有效模拟。

On the basis of analyzing the principles of interleaver filters of the interference of polarized light and planar lightwave circuit-type lattice structure, the equivalent mathematical representation of the spectral transmittance of the two kinds of interlearers is revealed. The equivalent relationships of the structural parameters of them are given.

在分析比较双折射晶体偏振光干涉型和平面波导环形格子结构型光交错复用滤波器原理的基础上，揭示了两者在光谱透射率的数学上的等效性，给出了两者结构参量之间的等效关系，可以直接利用经简单傅里叶级数对比法获得的晶体的结构参量对平面波导环形格子结构型光交错复用滤波器进行结构设计。

Combined with the spectral representation method and the fast Fourier transform technique, the digital simulation of 3-dimensional turbulence wind field for Runyang Suspension Bridge was carried out.

基于谐波合成法，并运用FFT技术，进行了润扬悬索桥桥址区三维脉动风场的模拟。

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％。