GB/T 7974 - 2002.Paper , board and pulp- Measurement of brightness-Diff/Geometry. GB/T 7974以模拟Ds光源、漫...
GB国家标准
GB国家标准
GB国家标准
GB/T 7974-2013 纸、纸板和纸浆.蓝光漫反射因数D65亮度的测定(漫射/垂直法,室外日光条件)
GB/T 7974-2013.Paper , board and pulps -Measurement of diffuse blue reflectance factor-D65 brightnes...