And the overall design model of system based on this investigation put forward, including function architecture, and does research the key technique of the distributed NMS.
在此基础上提出了该系统的总体设计，包括功能体系结构，并对分布式网管系统的关键技术进行了研究。
Channel estimation is the key technique to implement OFDM system, and is also the hotspot of research.
信道估计是实现OFDM系统的关键技术之一，也是目前研究热点。
Heating cutting technology and the present state are briefly introduced. The research object, key technique and the application prospect of this technology are described.
简要介绍了加热切削技术及其现状，叙述了加热切削技术的研究目标、关键技术和应用前景。
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