为什么说凸透镜对任何一束光都有会聚作用 知乎 Template




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Try and sketch some of theseBolo tie, Torque, Junkie, Watermelon, Wagon wheel, Harp, Swimmer, Square, Kiwi, Cafeteria, view more ideas


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sketch #3448 Treba mi bolji "mish " ;)


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sketch #4646 Panda by Raimundo Santos

tomski为什么说凸透镜对任何一束光都有会聚作用 知乎 coloring