[計] 系統(tǒng)實時時鐘 real time clock: 實時時鐘real time clock circuit: 實時時鐘電路real time clock log: 實時時鐘記錄real time clock rtc: 實時時鐘real-time clock and calendar: 實時時鐘和日歷下載手機詞典可隨時隨地查詞查翻譯