infrared contrast frequency亚音频
IRIF Infrared Intermediate Frequency红外中频总线
infrared low frequency红外低频
infrared stretching frequency释义红外光延伸频率
characteristic infrared group frequency特征红外基团频率
infrared high-frequency高频红外
end infrared frequency超级高频
infrared frequency doublers红外倍频器
far-end infrared frequency超级高频