un. 移頻電報;頻移電報 [網(wǎng)絡] 移頻電報術(shù) frequency shift telegraphy: 頻移電報; 移頻電報frequency-shift telegraphy: 移頻電報phase shift telegraphy: 移相電報audio frequency telegraphy: 音聲周波電信four frequency diplex telegraphy: 四頻雙信電報術(shù); 四頻同向雙工電報下載手機詞典可隨時隨地查詞查翻譯