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烽火通信长飞纤芯G652D单芯皮线光缆1芯光缆室内光纤线缆2钢

导读:导读: 中国目前陆地干线网主要以普通G.652.D光纤为主,而上世纪90年代 铺设的光缆已经达到预期20~25年的使用寿命,今后几年将逐步出现对干线网络进行  ...

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