光通信系统和数据网络 Optical Communications Systems and Data Networks
现代的全球网络媒体和通信系统起源于19世纪，当时信息第一次以电子方式远距离传送。
Today's globally networked media and communication system has its origins in the 19th century, when, for the first time, messages were sent electronically across great distances.
恐怖分子或敌对势力的特工可以对企业和系统发动袭击，这些企业和系统控制着一个经济体的重要部分，包括发电站、电网和通信网络。
Terrorists or agents of hostile powers could mount attacks on companies and systems that control vital parts of an economy, including power stations, electrical grids, and communications networks.
存储网络专门用于集群文件系统的通信和访问。
The storage network is used exclusively for clustered file system communication and access.
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