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光交换
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光交换
将光信号选择性地从一个端口路由至另一个端口的技术。我们将实现光交换的设备称为光开关,它是各种类型光通信网络中的核心设备。
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professional competence
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Professional Competence Standards for International Chinese Language Teachers
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Professional Ethics for Librarians in China
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