GB/T 2680-1994

Determination of light transmittance， solar direct transmittance， total solar energy transmittance and ultraviolet transmittance for glass in building and related glazing factors

建筑玻璃 可见光透射比、太阳光直接透射比、太阳能总透射比、紫外线透射比及有关窗玻璃参数的测定