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标题: G.971 [查看完整版帖子] [打印本页]

时间: 2018-10-1 11:57

作者: lyjpanda123 标题: G.971

Digital sections and digital line system – Optical fibre submarine cable systems

附件: T-REC-G.971-201611-I!!PDF-E.pdf (2018-10-1 11:57, 982.45 KB) / 下载次数 0
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