最佳答案:市面上的紫光灯一般都是短波的紫光灯,用于医院消毒,没有直接照射也只能说效果不是特别好,但是不能说完全没有伤害。可是紫外线只要一张纸就可以隔开The biggest attraction on Lantern Festival is the sea of lanterns in every conceivable size and shape. Chinese started to celebrate the Lantern Festival since the Han Dynasty (206。
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最佳答案:人眼睛已经适应白天这种白色的太阳光,蓝色led发的蓝色光偏离太阳光太多,对眼睛肯定是有伤害,不过短时间没什么影响,若长时间就有影响啦!The Lantern Festival is a festival celebrated on the fifteenth day of the first month in the lu Lantern Festival, children go out at night to temples carrying paper lanterns and solve rid。
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最佳答案:市面上的紫光灯一般都是短波的紫光灯,用于医院消毒,没有直接照射也只能说效果不是特别好,但是不能说完全没有伤害。可是紫外线只要一张纸就可以隔开The biggest attraction on Lantern Festival is the sea of lanterns in every conceivable size and shape. Chinese started to celebrate the Lantern Festival since the Han Dynasty (206。
最佳答案:人眼睛已经适应白天这种白色的太阳光,蓝色led发的蓝色光偏离太阳光太多,对眼睛肯定是有伤害,不过短时间没什么影响,若长时间就有影响啦!The Lantern Festival is a festival celebrated on the fifteenth day of the first month in the lu Lantern Festival, children go out at night to temples carrying paper lanterns and solve rid。