短語詞組短語frequency y selector 選頻器frequency scale selector 頻率範圍選擇器frequency channel selector 頻道轉(zhuǎn)換開關(guān)video frequency matrix selector 廣播電眡眡音頻矩陣選擇器broadcasttelevision audio -video frequency matrix selector 廣播電眡眡音頻矩陣選擇器group frequency selector 頻組選擇器super heterodyne frequency selector 外差式選頻器high speed frequency selector 高速頻率選擇器 返回 frequency selector