Home / Standards / GB/T 7962.9-2010 GB/T 7962.9-2010 Active Test methods of colourless optical glass - Part 9: Coefficient of optical absorption 无色光学玻璃测试方法 第9部分：光吸收系数 Standard Type GBT ICS 81.040.01 CCS N05 Status 现行 Issue Date 2011-01-14 Implementation 2011-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A