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眼睛被晒伤……是一种什么样的体验?
在选购太阳镜时,你可能也注意到很多产品界面写着“ UV400”,这表示这副太阳镜可以阻挡波长在400纳米以下的紫外线。紫外线是一种电磁辐射,波长比可见光短,人的眼睛看不到它们,而根据波长范围,紫外线被分为三种类型: ...
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