first-harmonic resonance

first... ... First harmonic components ： 基波分量 first-harmonic resonance ： 基波谐振 first-harmonic ： 一次谐波 ...

... first harmonic oscillation 基本振荡，基波振荡 first-harmonic resonance 基波谐振，基波共振 first-in first-out 先进先出 ...