基波first harmonic;fundamental harmonic;fundamental wave详细»
基波first harmonic;fundamental harmonic;fundamental wave详细»
基波first harmonic;fundamental wave详细»
基波fundamental详细»
基波〔名词〕principal wave详细»
基波firstharmonic详细»
基波first harmonic;superior wave详细»
基波fundamental harmonic;fundamental wave详细»
基波first harmonic;fundamental harmonic详细»