Home / Standards / GB/T 42257-2022 GB/T 42257-2022 Active Method for measuring optical and laser performance for Chromium and Erbium co-doped Yttrium Scandium Gallium Garnet laser crystal 铬铒共掺钇钪镓石榴石晶体光学及激光性能测量方法 Standard Type GBT ICS 31.260 CCS Q65 Status 现行 Issue Date 2022-12-30 Implementation 2023-04-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A