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.
XF-I系统把最先进的EPLRS有效波形用于通信、战术位置定位信息和电子对抗，可提供有力、具备自我修复能力的环境自适应网络。
The XF-I system uses the most advanced EPLRS waveform available for communications, critical position location information and effective electronic counter-countermeasures.
语音，电子邮件，视频，即时通信和其它通信系统的不断融合将会继续提升对有实施经验的网络专家的需求。
The ongoing convergence of voice, E-mail, video, instant messaging and other communications systems will continue to create demand for networking specialists with implementation experience.
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