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zhuan jia jian yi yong huang yan se shu bu
Pages: 63
Year: Issue:  3
Journal: Green Leaves

Abstract: <正> 上海市眼科专家最近做的一项临床对照观察表明,近年来中小学生居高不下的近视眼发病率,可能与他们使用的课本、练习簿千篇一律地采用白色纸有关。为此,建议学生簿册应以黄颜色纸取代白色纸。人的视觉机理与视觉环境密切相关。白色纸反射的是白色全频光,视觉亮度最大,会产生最强的视
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