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1·The theory of electromagnetic field and RFID technology are combined in this paper and some exploring work for research on RFID antenna radiation field and RFID application is done.

本文正是把电磁场理论和RFID技术结合，为RFID系统天线辐射场的研究和应用做了一些探索性的工作。

2·In the field of space exploring, engineers usually increase the quantity of antenna elements and the work band to improve the effect distance and resolving power of the antennas.

在空间探测领域，工程师往往会增加天线单元数量和工作带宽，以提高天线的作用距离和分辨率。