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.
他们一天两次通过无线电通信系统与反叛者领导人保持联系。
They are in twice daily radio contact with the rebel leader.
通过嵌入处理器芯片的光通信，建立Exaflop(1018次，是千万亿次petaflop的1000倍)级水平的高效能计算机系统的愿景将在不太遥远的未来实现。
With optical communications embedded into the processor chips, the prospect of building power-efficient computer systems with performance at the Exaflop level might not be a very distant future.
通信还是可靠的，因为使用JMS时系统保证消息被传送一次而且仅传送一次。
Communication is also reliable because messages are guaranteed to be delivered once and only once when using JMS.
演习模拟了一次协同网络攻击，目标是信息技术、通信、化学和交通系统与设施。
The exercise simulated a coordinated cyber attack on information technology, communications, chemical, and transportation systems and assets.
如果EEG和飞行员的行为显示，他开始被信息压的喘不过气来，系统可以临时“淡出”次重要的屏幕信息，并且减少接入的无线电通信。
If the EEG and pilot's behaviour indicate that he is becoming overwhelmed, it can temporarily "grey out" less vital onscreen information and reduce incoming radio communications.
通信系统制造商思科预计，到2013年因特网上流动的数据量每年将达到667eb(艾字节，2的60次方)。
By 2013 the amount of traffic flowing over the Internet annually will reach 667 exabytes, according to Cisco, a maker of communications gear.
在这个系统中，通信载体、信源编码、虚拟键盘的设计和脑-机接口信号的单次提取是四个最核心的问题。
There are four key issues in the system, that is communication carriers, source coding, designation of virtual keyboard, and the single-trial estimation of its message carriers.
随着计算机网络通信技术在电力二次系统中的广泛应用，网络安全问题越来越突出。
With the widely application of the computer network communication technology in the power secondary system, network security problems become more and more striking.
调制解调器的已调信号通过VHF通信系统进行二次调制，通过VHF通信系统的信道实现数据通信。
Modem signals will be transferred through the VHF communications system has a second modulation, through VHF communication system access to data communications.
煤矿安全监控系统通信实时要求高，单次通信量小，非常适合采用CAN总线。
In coal mine, the real-time requirement of communication of safety monitoring system is critical and each communication traffic is little, so the system is suited for CAN Bus.
作为一次练习，估算了测控通信系统的工作频率、电波穿过“黑障”区的衰减常数；
As an example, the operation frequency of TT&C and data transmission(TTC&DT) and the attenuation constant of electromagnetic wave through the blackout zone are estimated.
利用大气对光的散射作用可以实现非视线通信。在单次散射假定下，研究了非视线光散射通信系统的大气传输模型。
Based on the assumption of single-scattering, atmospheric propagation model of non-line-of-sight optical scattering communication system is studied.
如何提高电力系统二次装置内部通信的速度，增加通信容量是摆在我们面前的紧要课题。
How to improve internal communication speed of secondary equipment and how to enlarge communication volume are urgent targets we have to face.
如何提高电力系统二次装置内部通信的速度，增加通信容量是摆在我们面前的紧要课题。
How to improve internal communication speed of secondary equipment and how to enlarge communication volume are urgent targets we have to face.
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