Home / Standards / GB/T 33903-2017 GB/T 33903-2017 Active Automatic solar tracker of shading ball model for diffuse radiation measurement 散射辐射测量用遮光球式全自动太阳跟踪器 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