近年来，关于因特网业务量多重分形性的研究已成为网络通信研究领域的一个热点。
Recently, the study on the multifractal nature of Internet traffic has been becoming a hot-point in the field of study on communication networks.
近年来，人们对实时性通信的需求，已经从以前的语音通话转变为对图像、语音、文字和视频画面的多重需要。
In nowadays society, people's demands on real-time communication have changed from previous voice calls to multiple needs, such as images, voice, text, even video images.
多重直扩信号的快速捕获是卫星定位及通信系统研制过程中遇到的一个主要课题。
Fast acquisition for overlapping DS-signals is an important question in developing satellite fast positioning and communication systems.
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