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兩端固定駐波
Author:
ken@ylshsap
GeoGebra
New Resources
找出對稱軸
異分母分數減法
GeoGebra笔记功能体验课件
錐體建築師
畫出對稱圖形
Discover Resources
saaddfasdf
同心圓+等分割線
等分圓製作
几何体的副本
根據百分率找數量（二）: 例1的副本
Discover Topics
Vectors 2D (Two-Dimensional)
Cuboid
Statistical Characteristics
Planes
Quadrilaterals