一束与水平面成60°角的光线射到水平放置的平面镜上入射角是 度反射角是 度.当入射光线逐渐偏离平面镜则反射光线将 法线. 题目和参考答案 Template




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tomski一束与水平面成60°角的光线射到水平放置的平面镜上入射角是 度反射角是 度.当入射光线逐渐偏离平面镜则反射光线将 coloring