基于分形的自相似性和空间填充特性设计的分形天线，具有电小尺寸、宽频和多频等特性。
The fractal antenna based on space self-filling ability and self-similarity ability, presents some characteristic such as electrically small size, wideband and multi-frequency.
结果表明：微孔阴极中的颗粒连通性好、颗粒尺寸小以及孔隙率高都有利于电脱氧的进行。
The results show that small particle size, good connectivity among particles and high porosity of the cathode enhance the rate of electro-deoxidation.
本文研究小电尺寸副面和馈源横向大偏焦时次级方向图特性。
This paper investigates the secondary pattern performance for the small electrical size subreflector and large lateral-feed displacement.
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