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主要阐述了济宁市城区有线电视网络升级改造时 ,光纤传输部分采用环 -星型拓扑结构的设计考虑以及指标分配与计算实例
Mainly expounds Jining City urban cable network upgrade, the optical fiber transmission part of the use of ring - star topology design considerations and indicators of the allocation and calculation examples