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High-speed provisioning at speeds up to 2.5 gigabytes per second.It is most often used by large enterprises or as an Internet service provider (ISP) backbone. See OC3.
英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。