【摘 要】
：
页刊1923叮8 1834“49期5 33 455 5 56 综述期页对我国电信网发展的几点思考……宋直元11通信传输技术的最新进展 —1989年IEEE国际通信会议述评 ····..·....·····
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页刊1923叮8 1834“49期5 33 455 5 56 综述期页对我国电信网发展的几点思考……宋直元11通信传输技术的最新进展 —1989年IEEE国际通信会议述评 ····..·....·························……姚彦1390年代的通信技术 —1959年全球电信会议(GLOBEeQ
Pages 1923, 81834, 49, 5, 33, 455, 5, 56 Summary page Development of China’s telecommunications network Reflections ... Song Zhanyuan 11 Recent Developments in Communication and Transmission Technologies - Commentary on IEEE International Conference on Communications, 1989 ···························································································································· Yao Yan Communication Technology in the 1390s - Global Telecommunication Conference in 1959
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