查询词典 harmonic analysis

For nonlinear harmonic oscillators, we close the flow equations and acquired an explicit expression of energy-level. For nonlinear-coupled harmonic oscillators, we close the flow equations and diagonalize the Hamiltonian by numerical analysis methods.

对非线性谐振子系统，计算出系统参数随流参数变化的一组方程及系统的能级；对耦合的非线性谐振子系统，得出系统参数随流参数变化的一组非线性方程，数值分析对角化了系统。

The harmonic pollution control is inevitable, and the most important problem to solve is harmonic detection and analysis.

谐波治理势在必行，而首要解决的问题就是谐波检测和分析。

In order for analysis of the harmonic of arc welding power supply, a virtual harmonic analyzer has been developed.

基于弧焊电源谐波分析的需要，研制开发了一台弧焊电源谐波分析仪。

And a new method ,named three-segment method , is present to analysis harmonic winding no-load property curve for synchronous generator by third harmonic excitation.

并提出了一种分析三次谐波励磁同步发电机谐波绕组空载特性的新方法——三段法。

The basic principles and evolution process of Active Power Filter are first introduced. The scheme and structure of single-phase hybrid filter system is then illustrated and quantitative analysis is made based on the harmonic and reactive compensation principles. Through theoretical derivation, the said system has been proved to have the function of harmonic and reactive compensation.

本文首先介绍了有源电力滤波器(Active Power Filter，简称APF)的基本原理及发展历程，阐述了单相混合型滤波系统的方案和结构原理，对其进行了谐波和无功补偿原理的定量分析，通过理论推导证明了该系统具有谐波和无功补偿的功能。

The results of the spectrum analysis show that the first wave in the harmonic waves is preponderate in the harmonic waves, the significant areas are North, Northeast, South-west and South of Chain, and the maxium values of amplitude occure in July and August.

对各站每年月雨日序列的波谱分析表明，我国大部分地区年周期的(第1谐波)振动在与其余波动比较中占绝对优势，显著地区是华北、东北、西南及华南地区，振幅最大值出现在7—8月份。

The examples show that harmonic wavelet packets transform more excellent than dyadic wavelet transform, and more excel in noise filter based on Fourier transform in sampling rotating vector analysis about vibrational signal on the basis of harmonic wavelet packet transform is putted forward.

实例表明，谐波小波包变换对强噪声下信号的提取能力优于二进小波变换，更优于基于Fouriar变换的噪声滤波。

Them, it introduces Three Phase Ferromagnetic resonance circuit thoroughly and makes a further analysis of its generation of high harmonic, harmonic ferroresonance and the mathematical model of subharmonic.

然后详细地介绍了三相铁磁谐振电路，对其所产生的谐波谐振、基波谐振、分频谐波谐振建模，做了进一步的分析。

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. The test results are all in good agreement with the theoretic analysis.

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。

On the basis of the mathematics model of contrate harmonic gear drive, the change law of meshing backlash of contrate harmonic gear was analyzed by meshing analysis software.

据板壳理论采用高度变位对刚轮和柔轮进行变位，在端面谐波齿轮传动数学模型基础上，用啮合分析软件分析端面谐波齿轮啮合侧隙的变化规律。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。