查询词典 frequency function

This model was simplified to a single degree-of-freedom system by means of complex variable function. The stationary solution of system was solved by harmonic balance method, and the amplitude-frequency response was presented.

采用复变函数将系统的动力学方程简化，利用谐波平衡法分析了系统的稳态解，得到了系统的幅频响应。

The classical signal analysis method is Fourier transformation, whose essence is to decompose the signal wave into many sine waves, and which also can be seen as representation of time function in frequency domain.

傅里叶变换是经典的信号分析方法，其实质是：把波形分解成许多不同频率的正弦波之和，可看作是时间函数在频率域上的表示。

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 theoretic transfer function of the filter made of N-stage HBFs, and the expression are obtained when N is 1, 2 or 3; the polarization independence of the filter is analyzed, and the relation between the frequency response and the parameter of filter such as the length, beat length of HBFs and the angles between HBFs is studied; finally, some experiments are performed to check the theory, and the result shows to have good agreement with the theoretic result.

从理论上得到了N段双折射光纤构成环镜滤波器滤波特性的结果；具体给出了N为1、2和3时的具体表达式；分析了所构成的环镜滤波器的偏振无关特性；讨论了双折射光纤的长度、拍长、双折射光纤之间夹角等因素对滤波器滤波特性的影响；最后，做了相关的实验验证，所得到的实验结果和理论模拟结果非常吻合，证实了理论的正确性。

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。

Is the universe black hole reflection Gamma ray and Earth's resonance frequency is same, with solar radiation dual function.

就是宇宙黑洞反射的伽马射线和地球的谐振频率相同，和太阳辐射的双重作用。

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 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。

It is pointed out that beacuse the first natural frequency is much smaller than the second one, it bears the primary function in vehicle guideway interaction.

分析指出轨道系统的第一固有频率远小于第二固有频率，在车轨耦合振动中起主要作用。

In Chinese, there are many "gustatory" words such as sour, sweet bitter, hot, fragrant, odoriferous and so on, and these words which originally expressed physiological feelings have extended their usage in function, scope and frequency.

中华民族有着悠久的饮食文化，十分重视"味"的感觉，语言是文化的载体，汉语言中与"味"觉相关的词语有酸、甜、苦、辣、香、臭等，这些表生理感受的词汇扩散到更广阔的领域，提高了它们的使用功能、使用范围和使用频率。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！