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将军饮马问题（吴兴海）
Author:
吴兴海
GeoGebra
New Resources
直角坐標平面上的旋轉變換
四邊形的特性
球體建築師
錐體建築師
柱體建築師
Discover Resources
三次函數02
HW question locus 6
Doppler Effect and Shockwave
選修數學
（三）观察物体
Discover Topics
Functions
Rectangle
Means
Parabola
LCM and GCD