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同分母分數加法
Author:
GaryLee
GeoGebra
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讀磅
祖冲之的期望：内棋与外棋
斜率的值
龙形曲线-分形龙2
科氏力 (Coriolis Force)
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Homework7
第三冊
Angle between Lateral Faces 2
九九乘法表
會暫停的指針