对称环 meaning in English

symmetrical ring

The procedure and methods for constructing new type microwave left - handed are summarized . by applying such approach , multiple new samples including the structures of symmetric rings , embedded rings , rings are desgined , realized and / or verified . 4
使用该种方法，设计、实现或验证了包括对称环、嵌套环、环等多种新型结构异向介质样品，并对其性质进行了分析和仿真； 4 、首次实现了一种基于结构的一维各向异性异向介质样品。
Discussions and preliminary experiments are given for some potential applications of left - handed materials . experimental results which are in accordance with expects for the focusing of plane wave using symmetric rings and the focusing of radiate source using rings are obtained . simulation results are also obtained concerning the - like structure based backward radiate antenna and transmission line based left - handed structures
对称环结构异向介质凹透镜的平面波聚焦、结构异向介质的点源会聚等实验都得到了和预期接近的初步结果；对基于结构全固态异向介质后向波介质天线微波异向介质的实验研究和基于微带电路结构单元的异向介质进行了计算机仿真研究，也取得了较好的结果。