[物理] 變量調(diào)制信號傳輸系統(tǒng) transmission modulation: 傳輸調(diào)制variable modulation: 可變燈; 可變調(diào)制modulation signal: 調(diào)制信號signal modulation: 信號調(diào)制variable transmission: 變速傳動下載手機詞典可隨時隨地查詞查翻譯