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本文以浙江省象山地区全县光缆ＣＡＴＶ干线网络系统为例，论述了光缆ＣＡＴＶ干线网络系统的结构形式，设计原理以及主要技术指标的工程计算方法。
In this paper, a case of CATV trunking network system in the whole county of Xiangshan in Zhejiang Province is taken as an example to discuss the structure, design principle and engineering calculation method of CATV trunking network system.