Home / Standards / GB/T 33869-2017 GB/T 33869-2017 Active Comparison method for absolute pyrheliometer 绝对直接辐射表比对方法 Standard Type GBT ICS 07.060 CCS A47 Status 现行 Issue Date 2017-07-12 Implementation 2018-02-01 Responsible Dept 中国气象局 Drafting Unit N/A