本文基于最优化理论，利用模拟电荷法对一个小型的交叉场天线（CFA）进行了场的数值分析，得到CFA周围的电场、磁场及玻印廷矢量的分布。
In this paper, we introduce the basic theory and the design of CFA, and analyze the field of CFA by CSM on the basis of method of optimization.
年初，欧云和位于阿尔及利亚的边境城市廷杜夫的通航受到人们的欢迎，大家仿佛看到了转机。廷杜夫城与玻利萨里奥阵线流放的主要营地相邻。
Earlier this year flights between Laayoune and Tindouf, the nearest big town in Algeria, close to Polisario's main camps in exile, were hailed as a confidence-building measure.
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