Home / Standards / GB/T 25897-2020 GB/T 25897-2020 Active Residual resistance ratio measurement—Residual resistance ratio of Nb-Ti and Nb3Sn composite superconductors 剩余电阻比测量 铌-钛(Nb-Ti)和铌三锡(Nb3Sn)复合超导体剩余电阻比测量 Standard Type GBT ICS 17.220.20;29.050 CCS H21 Status 现行 Issue Date 2020-12-14 Implementation 2021-07-01 Responsible Dept 中国科学院 Drafting Unit N/A