提出了一种可控超电磁材料Metamatrial与结构，研究了在4~10GHz范围内的电磁波传输系数与单站雷达散射截面(RCS)的电可控特性。-A super-controllable electromagnetic materials and structures Metamatrial studied in the range of 4 ~ 10GHz electromagnetic wave transmission coefficient and single-station radar