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GB/T 41434-2022 纸、纸板和纸浆光学性能基本术语 Paper, board and pulps-Basic terms for optical properties...2023-07-24

BS EN ISO 12625-16-2015 薄纸和薄纸制品第16部分:光学性能的测定不透明性漫反射法 Tissue paper and tissue pro...2023-05-01

GB/T 41434-2022纸、纸板和纸浆光学性能基本术语Paper, board and pulps—Basic terms for optical properties...2022-10-27