频率函数

Figure 3 shows the frequency response function determined by the help of a modal analysis based on the impact hammer method.

图3显示频率响应函数确定的帮助下模态分析的基础上，冲击锤的方法。

So the frequency response functions of this system are calculated in the last chapter.

在系统表达式已知的情况下，可以通过谐波探测法求出系统的各阶频率响应函数。

Theoretical analysis proves that,when the pixel number,pixel size and reconstructed wavelength of the hologram are certain,computer simulated algorithms of Fresnel diffraction integral fall into convolution algorithm,angular spectrum algorithm and direct Fourier trans...

通过对相位函数局域空间频率的分析，给出了判定算法适用范围的特征再现距离，并分析得出，再现距离大于特征再现距离时，适合用卷积法；小于特征再现距离时，适合采用角谱法；等于特征再现距离时三种方法都适用。

In this thesis, first, the basic principles and properties of the Generalized Frequency Response Function and the Volterra Series are introduced.

首先讨论了非线性系统相关理论，包括Volterra级数和广义频率相应函数的基本原理，基本性质，以及以此为基础的非线性系统故障诊断。

The basic features of digital baseline estimation for multi-channel pulse height analysis are introduced. The weight-Junction of minimum-noise baseline filter is deduced with functional variational calculus. The frequency response of this filter is also deduced with Fourier thansformation, and the influence of parameters on amplitude frequency response characteristics is discussed.

介绍了用于多道脉冲幅度分析的数字基线估计方法的基本特点，利用泛函变分方法推导了最小噪声基线滤波器的计权函数，利用Fourier变换导出了数字基线估计的频率响应，探讨了参数取值对其幅频特性的影响。

An optimal filter is designed specially for dq transform used in the voltage mea-surement of transfer switch,which is composed of lower-order notch filter and lower-order low pass filter with higher cut-off frequency in series.Its transfer function is presented by theoretical derivation.If the order is same,it is better in measuring the positive sequence of fundamental amplitude than the average filter and the low-pass filter.

针对转换开关电压检测法——dq变换设计了优化滤波器，该滤波器是利用低阶陷波滤波器和较高截止频率低阶低通滤波器串联形成的，通过理论推导给出了该滤波器的传递函数，在相同的滤波阶数下，该优化数字滤波器在提取基波正序幅值的性能比较中，优于平均值滤波法及低通数字滤波器法等。

This paper presented a method for S function of Pearson type three distribution based on incomplete gamma function for indefinite integral.

许多学者推导出了分布函数的反函数具有显式表达式的统计参数计算公式[1-2]，并且成功地应用水文频率计算。

Vector partial differential operator ; Dyadic Green function ; Heteromophic waveguide ; Cutoff frequency

矢量偏微分算子；并矢格林函数；异形波导；截止频率

The frequency dispersion and variation of group velocity with frequency are also calculated.

分析表明，两种界面上的非线性TE表面波均存在频率通带和禁带，且带宽是传播功率的函数。

The function relation of pulse group velocity with frequency and rain rate is obtained.

分析了脉冲波展宽效应机理，得到脉冲波群速度与电波频率、降雨率的函数关系。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。