查询词典 harmonic analysis

Total harmonic distortion, another ADC specification you need to watch, is the ratio of the rms sum of the powers of the harmonic components, or spurs, to the input-signal power

总谐波失真，另一个要注意的ADC指标，定义为谐波成分的均方根和，或者是输入信号功率的比值

Toccata reveals a mixed image, having in mind the style imitations, and rasembles toccatas of 20th sentury - from the music of Bartok, Stravinski, Prokofiev's harmonic style, Pancho Vladigerov's texture and harmonic originality, and even Chopin's etudes texture.

托卡塔揭示了一个混合的图像，同时具有风格的模仿，并rasembles20香榭舍托卡塔-从音乐的巴托克，斯特拉文斯基，普罗科菲耶夫的谐波风格，潘乔Vladigerov的质地和谐波原创性，甚至肖邦的练习曲纹理。

Every tonality we hear has a different harmonic structure, and that harmonic structure changes over time.

我们所听到的不同的音调有着不同的谐频结构，并且这个谐频结构会随着时间的推移产生变化。

We first show that the multiple harmonic Ritz values have only one harmonic Ritz vector associated with them in algebra.

用代数方法证明对每个重调和Ritz值，只有一个线性无关的调和Ritz向量与之对应。

It is introduced that harmonic current in the electric network and harmonic current detecting method based on instantaneous reactive power theory in the paper,and then it presents the current detecting method in the anisomerous mains voltage,aberrance circuit based on instantaneous reactive power theory .

通过对电网谐波和瞬时无功功率理论在谐波检测中应用的分析研究，作者给出了基于瞬时无功功率理论的检测方法在电网电压不对称、存在畸变时的电流检测方法。

The electron beam current measured by the beam current monitor(BCT3) is almost in direct proportion to the induced voltage of the fundamental harmonic.When the parameters of the pre-buncher and buncher are adjusted greatly while the beam current being unchanged,the fifth harmonic signal has a great change,but the fundamental signal changes gently.

根据不同时刻的记录，基频腔峰值电压与束流流强探测器BCT3所测流强值近似成正比关系；当大幅改变预聚束器和聚束器参数而束流流强不变时，反映聚束质量的五倍频腔信号也随之大幅改变，而反映流强信号的基频腔信号则变化不大，这些试验结果与理论分析完全一致。

The principle of harmonic wave detection which is based on wavelet transform was expatiated. It introduced a new approach of harmonic measurement based on period-interleaving of arithmetic for dissymmetrical system.

首先论述了基于小波变换的谐波检测的原理，根据目前小波变换在三相不对称系统谐波检测中存在的无法分离基波信号之不足，介绍了一种用于三相不对称系统的基于周期交错的测量方法。

The concept of harmonic control between two systems is presented. Necessary and sufficient conditions are given for harmonical stabilization of two systems. These results can be generalized to harmonic stability problems for more than two systems. Examples are given to illustrate the results.

摘要提出了两个系统协调控制的概念，主要研究了不同系统间的互助合作问题，给出两个系统间可协调稳定的充要条件及构造协调控制律的算法，并举例说明了所给结果的有效性，这些结果都可以向多系统协调稳定问题推广。

The concept of harmonic control between two systems is presented. Necessary and sufficient conditions are given for harmonical stabilization of two systems. These results can be generalized to harmonic stability problems for more than two systems. Examples are given to illustrate the results.

提出了两个系统协调控制的概念，主要研究了不同系统间的互助合作问题，给出两个系统间可协调稳定的充要条件及构造协调控制律的算法，并举例说明了所给结果的有效性，这些结果都可以向多系统协调稳定问题推广。

First,it mainly utilizes analytics to deduce formula of slot leakage reactance.It considers three instances,including monolayer-slot,multilayer isometric-slot and multilayer anisometric-slot.Then,the analytics and the FEM are utilized to calculate slot leakage reactance of stator winding of prototype of Powerformer and compare their results.Second,the theory of utilitzing FEM to calculate the reactance of Powerformer is simply introduced,including stable reactance,transient and subtransient reactance.Specially,the saturated influence of the stable reactance is considered.Then, the results are analysed.Final,it mainly introduces the influence of harmonic magnetomotive force of stator winding and analyses the harmonic magnetomotive force of stator winding.

首先是用解析法推导出Powerformer定子绕组槽漏抗的计算公式，考虑了单层圆形半闭口槽、多层等半径圆形半闭口槽和多层不等半径圆形半闭口槽三种情况，并对Powerformer样机的定子绕组槽漏抗用解析法和有限元法进行了计算，并比较其结果；其次，简要介绍了有限元法计算Powerformer电抗参数的原理，包括稳态电抗、瞬态电抗和超瞬态电抗，对稳态电抗考虑饱和影响，对结果进行分析；最后，介绍定子绕组谐波磁势对电机运行性能的影响并对定子绕组谐波磁势进行了分析。

After explaining total design of automated test system for microcircuit , the thesis introduces GPIB standard .

文章在说明了微电路模块自动测试系统的总体设计后，对GPIB标准进行了介绍。

He interceded in my behalf.

他替我说情。