The digital first-harmonic detecting method based on this kind of filter can be used in anyone power harmonic compensation system and microcomputer relay protection system.
此滤波器设计的数字基波检测方法可用于任何一种电力系统的谐波补偿和微机继电保护系统中。
The second movement is not as "heavy" as the first making it an excellent relief without losing its harmonic brilliance.
第二乐章不像第一乐章那么“重”，这使它在缓和前面的同时而又不失辉煌。
Thus a smaller membrane gives off a higher first harmonic .
较小的膜发出较高的第一陪音。
The circuit comprises a first filtering stage; a delay element; and a harmonic filter.
该电路包括第一滤波级、延迟元件、以及谐波滤波器。
The component having the lowest frequency in a complex vibration (fundamental frequency or first harmonic).
复杂振动中频率最低的成分(基频或一次谐波)。
To compensate of the nonlinearity error of heterodyne interferometers in nanometer measurement, a method for reducing the first harmonic nonlinearity is proposed.
为了补偿激光外差干涉纳米测量中的非线性误差，提出了一种减小非线性误差的一次谐波方法。
This occurs only when the second fork is tuned to a resonant harmonic of the first tuning fork's note or waveform.
当第二个音叉被调谐到与第一个音叉调谐音或波形能发生谐波共振的时候这些才会出现。
These methods can't be used not only to analyze the non integral order harmonics, but to distinguish the eccentricity and the first harmonic, and contain the lager nonlinear error.
这些方法不能分析非整次谐波，不能区分一次谐波和偏心分量，并且含有较大的非线性误差。
Brief reviews about elastic stability, free vibration, transient dynamic response and harmonic dynamic response of circular cylindrical shells are given first.
本文首先对圆柱壳的稳定性、自由振动、瞬态和稳态动力响应研究进行了简要回顾和评述。
The first harmonic winding and harmonic winding no-load property curve are gained when field current is change.
通过改变励磁电流的大小，得到了基波绕组和三次谐波绕组的空载特性曲线。
It is not the mother's name, but the mother first name harmonic tone, she had dreamed of oneself is a sedentary Gull?
那不是母亲的名字，却是母亲名字的谐音，她也曾梦想过自己是一只静栖的海鸥吗？
In this paper, according to the neuron adaptive detecting approach of harmonic current for APF, the realization scheme of an analog circuit is first proposed.
通过对有源电力滤波器神经元自适应谐波电流检测方法的探讨，提出了一种模拟电路实现方案。
The first chapter was built on harmonic fundamental concepts, harmonic harm and influence, and then described the present condition.
第一章主要介绍谐波的基本概念，谐波的危害及谐波问题的研究现状。
The experiment result showed that sinusoidal tube can effectively inhibit second order harmonic mode, increase first order pressure amplitude and lower down heating block temperature.
在一定加热功率下，正弦管能有效抑制系统产生的二阶谐波，提高一阶压力波动幅值并降低加热块温度。
The method USES the DC component and the first harmonic of a curve's chain code expressed by Fourier series to fit the curve, avoiding the inverse calculation of an array used in general methods.
该方法利用闭合曲线的傅立叶级数表示的直流分量和一次分量实现对闭合曲线的椭圆拟合，可以避免通常椭圆拟合方法中的矩阵求逆问题。
It is also found that the elastic modulus only relates to the first anharmonic coefficient, but has no relation to the simple harmonic coefficient and the second anharmonic coefficient.
弹性模量只与第一非简谐系数有关，而与简谐系数和第二非简谐系数无关。
At first, the design and implementation of MMW hybrid integrated sub-harmonic image rejection mixer is presented in this paper.
本文首先介绍了一种毫米波段具有镜频抑制功能的四次谐波混频器的设计与实现。
The wave pressures are computed numerically and the computed first-order and second-order harmonic wave pressures are compared with the measured data.
利用数值方法对波浪压力进行了计算，并将一阶和二阶波压力的数值结果与实测值进行了比较。
In 1958, he became music director of the New York Phil - harmonic the first American-born conductor to head a top symphony orchestra.
1958年，他成为纽约爱乐乐团的音乐指挥——第一位领导一个第一流交响乐团、出生在美国的常任指挥。
First, the current commonly used methods in a variety of harmonic detection is analyzed and compared in this paper.
首先，本文分析了目前常用的各种谐波分析方法，并进行了比较。
The first order non-simple harmonic coefficient enhances modulus.
第一非简谐系数的存在使弹性模量增大。
In this paper, firstly, relations of first two harmonic induced velocities to the lower and same-order harmonic circulations are obtained from the generalized classical vortex theory of the rotor.
本文从旋翼的广义经典涡流理论出发，通过环量对诱导速度的贡献的简化处理，推导出旋翼诱导速度的二阶分布。
Also, the harmonic filter is a low pass filter having a frequency cut-off point that attenuates first order harmonics of the output signal.
此外，谐波滤波器是具有频率截止点的低通滤波器，该低通滤波器削弱输出信号的一次谐波。
The time-harmonic responses of the system are first calculated by using an integral formulation of an ideal crack model.
两种不同频域方法的一致结果，证明了理想裂缝模型解的正确性。
The first is a limitation in the harmonic current that a user can transmit into the utility system.
第一个是，用户可以发送到的公用设施系统中的高次谐波电流限制。
A first-order inertia element was considered as the approximate model of SAPF. The compensation characteristic for each order harmonic current was obtained at different switching frequencies.
将并联型有源电力滤波器控制成一阶惯性环节，在不同开关频率时分析各次谐波与补偿特性的定量关系。
The paper first introduces the pre-parameter method of angular deflection for use in the calculations of dynamic stresses in rigidly-framed structures under harmonic vibrations.
本文介绍初参数的角变位移法在谐和振动作用下刚构动力计算中的应用。
The paper first introduces the pre-parameter method of angular deflection for use in the calculations of dynamic stresses in rigidly-framed structures under harmonic vibrations.
本文介绍初参数的角变位移法在谐和振动作用下刚构动力计算中的应用。
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