立體幾何框架模型18件套 18pcs a set 3D geometric frame model

SKU: M012
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SKU: M012 Category:

材質:優質彈性鐵絲

製造工藝:噴塑,焊接

規格:【學生用】【教師用】

輔助線可以顯示該立體幾何的橫,斜,直切面

含中小學常用的各款柱,錐體

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