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台灯一般有多少厘米

更新时间: 2020-11-03 00:00:00     

30厘米左右。因为眼睛距离书本30厘米时,既能看清字迹,也不会过度疲劳,以此推算,台灯的高度距离书面30厘米比较合适,这样既保证充足的阅读照明,周围的环境也有一定的亮度。如果台灯太低,则会使光线照到过小的范围内,而周围则一片漆黑,失去了可供远望的参照物。

关键词: 台灯 一般 多少 厘米

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