光从介质1通过两种介质的交界面进入介质2的光路如图所示.下列论述�光在介质1中的传播速度较大�光在介质2中的传播速度较大�光从介质1射� Template




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anonymous
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anonymous
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sketch #3260 sorry to over comment on your blog .haha. I 'm just flnpiipg through your posts after finding you through the KCWC. Recently I had this huge urge to learn to sketch with black ink pens. This cloud drawing is exactly the thing that I feel the need to put on paper. : )


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anonymous
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tomski光从介质1通过两种介质的交界面进入介质2的光路如图所示.下列论述�光在介质1中的传播速度较大�光在介质2中的传播速度较大�光从介质1射� coloring