GOST R 8.828-2013 确保测量一致性的国家系统. 在5 °至85 °的辐射入射角时光电元件和太阳能集热器光谱漫反射比的测定方法
State systems for ensuring the uniformity of measurements. Method of measurement of spectral diffuse reflectance of photovoltaic elements and solar collectors at angles of incidence of the radiation from 5 ° to 85 °