Home / Standards / GB/T 28871-2012 GB/T 28871-2012 Active Critical current measurement-DC critical current of Nb3Sn composite superconductors 铌三锡（Nb3Sn）复合超导体的直流临界电流测量 Standard Type GBT ICS 77.040.01 CCS H21 Status 现行 Issue Date 2012-11-05 Implementation 2013-02-15 Responsible Dept 中国科学院 Drafting Unit N/A