方环

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3.

For incident waves , the proposed structure has narrow stopband and wide pass band .

对于入射电磁波，该结构与传统方环结构相比具有窄阻带和宽通带特性。

4.

Buckle trade. Metal square and rectangle frames for general use.

环扣制造 .常用金属方环和短形环

5.

Vectorial Nonparaxial Propagation Equation of Gaussian Beams in the Presence of an Annular Aperture

非傍轴高斯光束通过方环硬边光阑的传输特性研究

6.

Propagation of super -Gaussian beams passing through an annular-aperture lens

超高斯光束经有方环光阑透镜的传输特性

7.

Current solutions to a square loop by using the wavelet and the method of moment

小波分析结合矩量法求解方环天线的电流分布