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教学素材：离心率相同的椭圆
Author:
清风拂琴，陌上花开
GeoGebra
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sanjiaohanshu
美國國旗 (Codex 版)
國旗 (Claude 版)
伊朗國旗 (Codex╱2026.10.07)
Earth with coastline
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拋物線標準式101.11.22
圓系
Tool4P
旋轉菱形
初中数学教学素材
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Natural Numbers
Optimization Problems
Geometric Transformations
Ellipse
Median Line