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三角形三边关系
Author:
林峰
GeoGebra
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异形操场
斐波那契螺旋弧线（表格法）
第八周作业1
科氏力 (Coriolis Force)
比較五件物件的重量
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阿壽工坊GGB Books
簡單動畫
正方形
轨迹方程
箭头平移动画
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Ellipse
Conic Sections
Matrices
Sequences and Series
Constructions