頻譜分支線 frequency spectrum: 頻率譜; 頻率圖譜; 頻譜spectrum of frequency: 頻譜amplitude frequency spectrum: 振幅頻譜audio frequency spectrum: 聲頻頻譜; 聲頻譜availability of frequency spectrum: 頻譜利用率下載手機詞典可隨時隨地查詞查翻譯