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黃斌
GeoGebra
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画直线等分三角形的面积
球体的体积推导
第八周作业
【案例】2013年安徽高考15题
三位數除以一位數(二)
Discover Resources
優良作品4(薇如)
Apollonius Problem 6 CLP Inversion 34
相机光圈模拟(3D)
小狗绕正五边形墙活动
새로운 양식
Discover Topics
Differential Calculus
Isosceles Triangles
Addition
Division
Translation