经常说「可以把太阳光看作平行光」，但自然中不存在平行光。那么太阳光角度是多�？是测量出来的还是计算的？ 知乎 Sketch Coloring Page

经常说「可以把太阳光看作平行光」，但自然中不存在平行光。那么太阳光角度是多�？是测量出来的还是计算的？ 知乎 Template

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tomski经常说「可以把太阳光看作平行光」，但自然中不存在平行光。那么太阳光角度是多�？是测量出来的还是计算的？ 知乎 coloring

经常说「可以把太阳光看作平行光」，但自然中不存在平行光。那么太阳光角度是多�？是测量出来的还是计算的？ 知乎 sketch template

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