With careful analysis into the frequency characteristic of the resistance and the reactance,the author found that the surface layer structure of the ring SrTiO_3 varistor was responsible, and that the electrical properties varyin.
实验发现SrTiO3环形压敏电阻器试样的复阻抗图在高频段有一段圆弧而同样工艺的厚圆片形试样却没有此现象。