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波动-多普勒效应-波源移动-孟琴双-王翚
Author:
王翚
GeoGebra
New Resources
算柱 (兩位數)
三位數除以一位數（二）
判斷球體
四邊形的特性
柱體建築師
Discover Resources
等比數列等比數列
soccer(final)
gltyz 矩形旋轉體
六年級 圓周
有趣的梯形面積問題
Discover Topics
Circle
Incircle or Inscribed Circle
Probability
Cone
Derivative