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)。
The first chapter was built on harmonic fundamental concepts, harmonic harm and influence, and then described the present condition.
第一章主要介绍谐波的基本概念,谐波的危害及谐波问题的研究现状。
The first chapter was built on harmonic fundamental concepts, harmonic harm and influence, and then described the present condition.
第一章主要介绍谐波的基本概念,谐波的危害及谐波问题的研究现状。
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