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数学（加减法学习）无需AMS 3D Printer File Image 1
数学（加减法学习）无需AMS 3D Printer File Image 2
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数学（加减法学习）无需AMS

铅笔的记忆 avatar铅笔的记忆

March 25, 2026

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Description

幼儿学习数学用教具。

圆形，对于幼儿来说比较友好，相对于其它形状更安全。

因为我没有AMS，所以在打印符号的时候加了暂停，手动换色。

License:

Standard Digital File License

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