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)。
It is usually composed of passive elements and harmonic sources which make the power phenomena in such a circuit much more complex than that in a linear circuit.
这种等效电路通常是由谐波电源和无源元件组成，这一等效电路产生的功率现象要比线性电路复杂得多。
A complex signal comprising several simple harmonic components is analyzed to check the performance of this Digital Filter software.
应用所设计的数字滤波器对由多个简谐波合成的复杂信号进行了滤波分析。
Conventional UPS systems operate to protect against such harmonic distortion brought by nonlinear load using complex filtering schemes, often employing large passive components.
对于非线性负载所引起的谐波失真，传统的逆变系统通常采用复杂的大规模无源元件滤波方案来滤除。
Based on the complex magnitude of harmonic signals and under the condition of ideal synchronous samplings, an algorithm for computing the frequency deviation is proposed.
在理想同步采样的条件下，提出了一种基于简谐信号复幅度的频率偏差求取算法。
With a minimum of mathematics and an engaging, highly rewarding style, Bloomfield provides in-depth discussions of harmonic regression, harmonic analysis, complex demodulation, and spectrum analysis.
由于最少的数学和担保，非常令人满意的风格，布卢姆菲尔德提供谐波回归，谐波分析，复杂的解调和频谱分析的详细的讨论。
Introducing the complex viscoelastic modulus, visco-elastic wave equation has the similar form with elastic wave equation for harmonic wave motion, in case of linear viscoelastic.
在线性粘弹性假设条件下，通过引入复弹性模量，使粘弹性波动方程具有和弹性波动方程类似的形式。
The solution of the Earth elastic dynamical equations can be also referred to some relations of complex vector spherical harmonic functions to the elastic strain tensor in spherical coordinates.
同时还研究了在球坐标系下弹性应变张量与复数矢量球函数的一些关系，为地球弹性动力学方程的解算提供参考。
The solution of the Earth elastic dynamical equations can be also referred to some relations of complex vector spherical harmonic functions to the elastic strain tensor in spherical coordinates.
同时还研究了在球坐标系下弹性应变张量与复数矢量球函数的一些关系，为地球弹性动力学方程的解算提供参考。
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