GB/T 24328.12-2020卫生纸及其制品第12部分:光学性能的测定不透明度的测定漫反射法标准
英文:Tissue paper and tissue products—Part 12: Determination of optical properties—Determination of opacity—Diffuse reflec...
英文:Tissue paper and tissue products—Part 12: Determination of optical properties—Determination of opacity—Diffuse reflec...