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Replying to Avatar 范植植植植

原來如此,因為相遇光波的慢變包絡的相位不同,所以才有兩倍週期的產生。哎呀,週老師,你真是個天才納吶!

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范植植植植 2y ago

臥槽,為啥這條是紫色的?

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