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Author:
郭淳靖
Topic:
Angles
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【案例】圆柱体内放置一个大球六个小球
漂亮的摇摆曲线
垂直線的斜率
圓的切線方程
球体的体积推导（优化版）
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圓柱的截面
正四面體交角
分數(約分)
熊大
正方形周界
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Differential Equation
Diagrams
Surface
Vectors 3D (Three-Dimensional)
Exponent