EX5072 日本環形過山車 (EX5072)

    $2,160.00

    SKU: EX5072 Category:

    Description

    動能和勢能關係,能量互相轉換,能量守恆定律,軌道附磁貼在白板上作演示
    磁托5個,軌道2.5m

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