同步数字传输
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数字同步传输
Synchronous Digital Transmission Network 同步数字传输网
synchronous digital transmission technologies 同步数字传输技术
SDN Synchronous Digital Transmission Network 同步数字传输网络
optical synchronous digital transmission network 光同步数字传输网
·2,447,543篇论文数据，部分数据来源于NoteExpress
The Indian government announced in December that it would impose tariffs of 50% on Huawei's synchronous digital hierarchy (SDH) transmission equipment while its cross-town rival, China's ZTE Corp.
FORBES: Huawei Doubles Down In Bangalore
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