同步傳送信號付載指標 sts synchronous transport signal: 同步傳送信號synchronous transport signal: 同步傳輸信號synchronous transport signal level: 同步傳送信號級別synchronous transport signal level sts: 同步傳送信號等級1payload pointer: 凈負荷指針下載手機詞典可隨時隨地查詞查翻譯