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交流电的模拟
Author:
孟宝兴
GeoGebra
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sanjiaohanshu
【案例】2018年全国1卷理科12题
拼砌四邊形
三位數除以一位數（二）
判斷球體
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長方形和正方形的面積_題F
面積：從梯形到三角形 02
reflectional symmetry_4
橢圓規Ellipsograph (Trammel of Archimedes)
穿越球
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Similarity Transformation or Similarity
Hyperbola