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提起镜子，你一定会抢着说，这已是我们再熟悉不过的老朋友了。是的，我们每天在梳妆打扮，穿衣服时，都要用到镜子。如果将镜子的玻璃做成特殊的形状，它的用处就更大了。例如，汽车上的凸面反光镜，可以反射较大范围内的情景；五官科医生头上的凹面反光镜，可将光线聚集于一
Lift the mirror, you will rush to say that this is an old friend we are familiar with. Yes, we use mirrors every day to dress and dress. If the glass of the mirror is made into a special shape, its use is even greater. For example, a convex mirror on a car can reflect a wide range of scenes; a concave reflector on the head of an otolaryngologist can concentrate light on a