谐波

So not only super-harmonic,also subhar monic and stochastical oscillation will appear.

因而，系统不但出现高次，而且还将出现亚及随机振动现象。

The modulation index can be increased by using distorted wave forms that contain only triplen (multiples of three) harmonics.

通过使用只含有三次的形作为载可以提高这个数。

The paper has introduced a kind of distortion factor analyser for sinusoidalsignal based on virtual instrument technology.

频谱分析法是目前信号失真度测量的常用方法,但分析的频谱泄露问题会严重影响测量精度。

It shoewd that nonlinear load injects hormonic power to system, and creates the negative error to energy metering.

实验结果表明，非线负荷向力系统注入功率，并对能计量装置产生负误差影响。

The reluctivity matrix is obtained by using the trigonometric function transformation and the form of coefficient matrix is simplified.

该方法适用于任意阶多项式描述磁化曲线的非线磁场问 题的求解，并提高了计算的精度。

The error estimation of the quasi-synchronous sampling harmonics anal-ysis and the method used for measuring the subharmonics of periodic signalsare also discussed.

文中还对测量误差作了分析和估计,并介绍了测量分数次的一种方法。

Resonance of surface waves of a given length is shown to be possible over bed waves with synchronous , subharmonic, or ultraharmonic wave lengths.

针对定长入射流，得到一个自治动力系统，给出它的次共振分叉图。

After analysis and determination on harmonic wave from rectification units operation, and understood hazardness of harmonic wave, the design project of harness was put forward.

介绍了化学工业整流装置产生的种类,的治理方法,滤器的种类及其特点,滤器方案的选择。

In this superradiance harmonics, the temporal width of harmonics is extremely short, the ratio of high harmonic fundamental wave is much higher than the known superradiance harmonics.

在这种机制里，脉冲的时间宽度极短；高次与基的比例比已知的超辐射高得多。

Conclusion:NTHI is a new technology in ultrasound diagnosis which can enhance tissue resolution,improving sonograph quality by reducing artifact and cultter,thereby it is useful to increase ultraso...

自然组织技术是一项新的超声诊断技术,它可以提高组织的分辨能力,减少干扰及伪像,改善图像质量,从而提高诊断水平。