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My second work
Author:
郭致伸
GeoGebra
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三位數除以一位數（一）
【案例】2013年安徽高考15题
算柱 (兩位數)
【案例】圆柱体内放置一个大球六个小球
柱體建築師
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單相感應電動機原理
餘弦公式2
線性規劃
正弦线与直线
折叠问题一例
Discover Topics
Cosine
Standard Deviation
Sphere
Cube
Right Triangles