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一、字迹褪变实验１、实验仪器:紫外光照箱:４０１Ｂ型热老化箱;ＹＱ-２５Ｄ型气流式盐雾腐蚀箱;ＤＬ-３０２型调温调湿箱;ＷＣＳＣ-１型色差计;ＺＢＤ型白度仪;ＴＧ-３２８Ｂ型电光分析天平;ＰＨＳ-２５Ｃ型酸度仪。２、实验试样:（１）纸张载体:７０克Ａ４中性复印纸;（２）?
First, the writing fade experiments 1, experimental equipment: UV light box: 401B heat aging tank; YQ-25D-type flow of salt spray corrosion chamber; DL-302-type thermostat humidity box; WCSC-1-type colorimeter; ZBD Type whiteness meter; TG-328B electro-optical analytical balance; PHS-25C acidity meter. 2, the experimental sample: (1) paper carrier: 70 g A4 neutral copy paper; (2)