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旋转的花瓣
Author:
孟宝兴
GeoGebra
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讀磅
【案例】2013年安徽高考15题
祖冲之的期望：内棋与外棋
三角函数 的副本
多邊形的面積
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初中九年级数学期中考试试题
tool
柱體斜切
轴对称的两点的动画演示.许兴华数学
S3 Ex4.3 Q06(3D圖)
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Derivative
Square
Variance
Frequency Distribution
Stochastic Process or Random Process