短語詞組短語even order harmonic 偶次諧波even number harmonic 偶次諧波even zonal harmonic 偶堦帶諧函數(shù)even harmonic mixer 偶次諧波混頻器even -order harmonic distortion 偶次諧波失真even harmonic operation 偶次諧波工作even harmonic function 偶諧函數(shù)even degree zonal harmonic eoefficient 偶次帶諧系數(shù) 返回 even harmonic