铁路段
Division of Labour on Transport Organization in Daqing Railway Region and The Research on The Equipment Transformation of Anda Marshalling Station
大庆地区车站运输组织分工及安达站设备改造方案研究
This paper states the first opened digital railway division communication system which is constructed with Δ M multiplex transmission system and digital division telephone switching system on the toll symetrical cable at Zhengzhou-Luoyang Railway Division.
本文介绍了在郑州&洛阳区段的长途对称电缆上开通的我国铁路第一个数字式区段通信系统,它由△M多路复用传输系统和数字式区段电话交换系统构成。
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