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逃离黑洞
Author:
zhen chen
GeoGebra
New Resources
祖冲之的期望：内棋与外棋
科氏力 (Coriolis Force)
百分數及其應用
撒针估算面积实验
斜率的值
Discover Resources
圓周公式應用題2
五上_面積（二）
集合
劉徽的「割圓術」的副本
识货
Discover Topics
Variance
Logarithm
Constructions
Matrices
Linear Programming or Linear Optimization