据《科技日报》1993年11月18日报道,在前不久国家超导专家委员会进行的全国高温超导材料对比测试中,北京有色金属研究总院的超导材料研究中心取得优异的成绩。该院研制的钇系高温超导薄膜的性能已达到国际先进水平,其中大面积膜的微波表面电 According to “Science and Technology Daily” reported on November 18, 1993, in the comparative test of the national high temperature superconducting materials conducted by the National Committee of Superconductivity recently, Superconducting Materials Research Center of Beijing Nonferrous Metal Research Institute achieved excellent results. The Institute developed yttrium-based high-temperature superconducting thin film performance has reached the international advanced level, in which large-area membrane microwave surface electricity