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多普勒效应动态演示
Author:
孟宝兴
GeoGebra
New Resources
錐體建築師
【案例】2013年安徽高考15题
【案例】2018年全国1卷理科12题
判斷球體
三位數除以一位數（一）
Discover Resources
畫三角形 題3d
題4
三角形的內角和+內心與外心
拼貼3
Fraction(2)
Discover Topics
Triangles
Correlation
Line Segment
Translation
Vectors 3D (Three-Dimensional)