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欧拉计划T13（js版）
Author:
金晓亮
New Resources
[洋蔥] 双垂图与全等(0544)
子弹图+猪手图
过已知圆和圆外一点的球
[洋蔥双垂图与全等
分數乘法列式練習
Discover Resources
圆的面积展开
旋轉體：Washer Method
球體的特性 (old)
矩形的探究1
多邊形面積(分割法)
Discover Topics
Statistical Characteristics
Vectors 3D (Three-Dimensional)
Perimeter
Frequency Distribution
Translation
