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新闻中心_OPGW光缆厂家，OPGW光缆价格报价，ADSS光缆厂家 ...
【新闻摘要】：（PS/根号下km）。详见YDT5121-2005长途通信光缆线路工程验收规范 第41页！G652C对比一下GYTA光缆g652d是什么光缆光纤的PMD系数为0.2皮秒每 ...
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