Home / Standards / GB/T 31522-2015 GB/T 31522-2015 Active Matrix to superconductor volume ratio measurement—Copper to non-copper volume ratio of Nb3Sn composite superconducting wires 基体与超导体体积比测试 Nb3Sn复合超导线铜与非铜体积比 Standard Type GBT ICS 77.040.99 CCS H21 Status 现行 Issue Date 2015-05-15 Implementation 2015-12-01 Responsible Dept 中国科学院 Drafting Unit N/A