NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
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
Issued Date:1994-01-02
Implemented Date:1994-10-01
Issued by:
The Standardization Administration of the People's Republic of China
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