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string art
String art ex4. Captain America Shield
string art
Author:
Xueliang Dong
String art ex4. Captain America Shield
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String art ex4. Captain America Shield
New Resources
球体的体积推导
判斷球體
球体的体积推导（优化版）
【案例】2013年安徽高考15题
拼砌四邊形
Discover Resources
九點圓
Tedt
凸透镜成像
Copy of 方格紙上畫四邊形
面積趣味題
Discover Topics
Arithmetic
Inequalities
Sphere
Perimeter
Percentages
