This paper firstly introduce the cognitive radio system based on the spectrum allocation of graph coloring model and mathematical symbols descriptions;
该文首先对认知无线电系统中基于图论着色的频谱分配模型及其数学符号描述进行介绍；
The paper introduces how to use Digital Radio-Graph technology to identify a light substance.
本文介绍了数字化射线照相技术对轻物质进行判断的方法。
The paper introduces how to use Digital Radio-Graph technology to identify a light substance.
本文介绍了数字化射线照相技术对轻物质进行判断的方法。
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