direct reading dial 中文意思是什麼
direct reading dial
解釋
直讀撥號盤-
The communication technology of electric automatic system is discussed. it principally studies the technology of organizing nets, the communication technology of low pressure electric line and the technology of spread spectrum communication. it gives the project that power line carrier and direct sequence spread spectrum communication are combined with automatic dial - up passing modems for daqing automatic reading meter system
探討了電力自動抄表系統的通信技術,重點研究了組網技術,低壓電力線通信技術,擴頻通信技術,提出了在大慶電力自動抄表系統中利用公眾電話網通過數據機自動撥號、電力載波和無線直接序列擴頻通信相結合的數據傳輸方案。
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