Home / Standards / GB/T 40293-2021 GB/T 40293-2021 Active Test method for refractive index of infrared optical chalcogenide films 红外硫系光学薄膜折射率测试方法 Standard Type GBT ICS 17.180.01 CCS N05 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国兵器工业集团公司 Drafting Unit N/A