Let me demonstrate to you the harmonic series.
我来为你们演示泛音列。
The second origin of music comes from the harmonic series, which is demonstrated by the open pipes without holes.
音乐的第二种起源是泛音列，它由无音孔开管形成。
There are many gravity quantities expressed by finite spherical harmonic series expansions in the computing for geopotential.
重力场计算中，经常需要计算以有限阶球谐级数表示的重力场元。
The harmonic series formula of the Earths disturbing potential is the most extensive applicable expression for the Earths gravity field model.
地球扰动位的球谐展开式表示是地球重力场模型应用最广泛的一种表示方法。
That's the harmonic series that's on that, and what the valves do is they shorten and lengthen that vibrating column of air very much like the cello string on the fingerboard.
这就是圆号上的泛音列,活瓣的作用是增长或减短,空气柱的高度,很像大提琴指板上的弦
Base on theory of lithosphere elastic flexure isostatic compensation, the spheric harmonic series expressions of topography-isostasy compensation gravity and geoid are established.
依据岩石圈弹性挠曲均衡补偿理论建立地形-均衡补偿重力、大地水准面异常的球谐级数表达式。
The power converters and other nonlinear loads "inject" the harmonic current into the power systems and cause a series of problems.
电力变流器和其他非线性负荷向电力系统“注入”谐波电流，引起一系列问题。
The working principle, Performances and features of DQ series harmonic demagnetizes and their applications in mines are described.
介绍了DQ系列谐合波式脱磁器工作原理、性能和特点及在矿山应用的情况。
The unified power quality conditioner (UPQC) is a kind of novel harmonic and reactive compensation equipment by combining the series active filter and shunt active filter.
统一电能质量调节器(UPQC)是结合串联有源滤波器和并联有源滤波器的一种新型谐波和无功补偿装置。
Analysis and simulation results show that different harmonic currents flowing into the capacitor circuit is different due to different reactance ratio of series reactor.
分析与计算结果表明，因串联电抗器的电抗率不同，其流进电容器回路的谐波电流也截然不同。
MDI's WF series waveguide Bandpass and Harmonic Filters excel in applications where high frequency, narrow bandwidth and high 'Q' are essential.
MDIWF系列波导通频和谐波滤波器，擅长应用与高频，窄带宽和高Q频率。
A new type series active power filter based on the fundamental magnetic potential self-balance and harmonic counteraction is proposed and its construction and operating principle is formulated.
本文在阐述滤波器基本原理的基础上，提出一种新型的基于基波磁势自平衡谐波抵消式原理的串联混合有源电力滤波器。
A new type series active power filter based on fundamental magnetic potential self-balance and harmonic counteraction is proposed.
提出一种新型的基于基波磁势自平衡谐波抵消式串联有源电力滤波器。
This article has explained its forming and harms and expounded in detail the importance of series reactors in the treatment of harmonic waves.
文章简述了谐波的形成及危害，并比较详细地论述了串联电抗器在谐波治理中的重要作用。
Therefore, it is demonstrated that the shunt or series APF should be used for compensating the current or the voltage harmonic source.
从而说明对电流型或电压型谐波源进行谐波补偿，应该分别使用并联型或串联型apf。
The arc furnace electric system will make appearance of more harmonic current at the series resonant point and the parallel resonant and influence of series resonant is larger for the system.
当电弧炉电气系统在串联谐振点和并联谐振点附近时，均会出较大谐波电流，而串联谐振对系统的影响更大一些。
Through analysis of the current waveform of the semi-control double three-phase 12-pulse rectifier and the expansion of Fourier series, the main harmonic components of the system were obtained.
通过对半控双三相12脉冲整流器的电流波形分析和傅立叶级数展开，得出系统的主要谐波成分。
We also should take protective measures for the volt power bright spots that produced by the series voltage resonance and the higher harmonic produced by the Electronic Ballast.
采用串联电压谐振产生高压起辉，必须采取过流保护措施。电子镇流器高次谐波的产生及其所带来的危害。
In allusion to the conventional reactive power compensation harmonic magnified disadvantage, this paper proposes the new harmonic restrained method that the reactor is series in the main loop.
针对传统的无功补偿可能存在的谐波方法的问题，提出了采用串联电抗器来防止谐波放大的设计方案。
As to the problem of sub synchronous resonance (SSR) in thyristor controlled series compensation (TCSC) circuit, a method to real time detect and suppress sub harmonic has been put forward.
针对晶闸管控制的串联补偿电路(TCSC)的次同步谐振(SSR)问题，提出了一种可实时检测次同步谐振，并对其加以抑制的方法。
A salient feature in the sources of harmonic materials Zhu USES is that of twelve-tone series.
朱践耳交响曲和声材料来源最突出的特征就是对十二音序列材料的运用。
In a practical circuit, the series APF can compensate a high capacity voltage harmonic source load or several low capacity voltage harmonic source loads.
在实际应用中，串联型APF既能对单个大容量电压型谐波源负载进行补偿，也能对多个小容量电压型谐波源负载进行集中补偿。
Through this research, a series of difficult technical problems on parameter optimization and on calculation of the content and loss of harmonic waves, etc. have been solved.
通过研究，系统解决了大容量干式励磁变压器参数优化、谐波含量及谐波损耗计算等技术难题。
A harmonic analysis for short data series is suggested to check the variation of the sensitivity and phase lag during the tidal observations.
为检验潮汐观测期间灵敏度及相位的变化，提出一种短资料的调和分析方法。
Both parallel resonance and series resonance are the two important parts of harmonic resonance problem.
串联谐振与并联谐振共同组成谐振问题的两个重要分支。
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。
In some circuit textbooks the rectifier circuit with the filter has been used as an example to illustrate the harmonic analysis of nonsinusoidal circuit adopted Fourier series.
在一些电路教材中常把带滤波器的整流电路作为一个实例，用以讲述用傅立叶级数的谐波分析方法来求解非正弦电路。
The permissible harmonic current of high order for long term in the compensative capacitor and series reactor were analyzed and calculated, as well as some tables calculated for reference were given.
提出了防止谐振的措施对补偿电容器及串联电抗器长期容许高次谐波电流值进行了分析和计算。
The expressions of the Fourior series corresponding to these waves were derived and it is possible to analyse the harmonic contents of PWM inverter output in theory.
较严格的数学推导过程，为理论上对逆变器输出的谐波成分计算分析提供了依据。
The expressions of the Fourior series corresponding to these waves were derived and it is possible to analyse the harmonic contents of PWM inverter output in theory.
较严格的数学推导过程，为理论上对逆变器输出的谐波成分计算分析提供了依据。
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