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calculation formula of circular area ratio concept derivation demonstration teaching model primary school mathematics science and education instrument

calculation formula of circular area ratio concept derivation demonstration teaching model primary school mathematics science and education instrument

圆面积圆周率概念计算公式推导演示教学模型 小学数学 科教仪器

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  • Item No. 30509
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    size(尺寸) USD $0.0 999 piece available
    45*24(45*24) USD $0.0 999 piece available
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Packaging information

CTN Size: 46 × 48 × 30 cm

G.W./CTN:16 kg

QTY/CTN:12 piece/carton

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Update time：20251027102509


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