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多普勒效应动态演示
Author:
孟宝兴
GeoGebra
New Resources
球體建築師
【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
錐體建築師
球体的体积推导
Discover Resources
T2 Geobra
Angle at Centre
半圓五角形滑動
面積的認識4
circle
Discover Topics
Scalene Triangles
Secant Line or Secant
Bar Chart or Bar Graph
Trapezium
LCM and GCD