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電與磁

顯示第 1 至 24 項結果，共 81 項

DIY電鈴
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人體導電實驗器（手不能抖）
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六合一磁鐵套裝
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學生用直流電動機
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導體和絕緣體
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強力彩色球形磁鐵 5mm
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捕捉磁場
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會跳舞的蛋
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水力發電演示器
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水果電池演示器
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物體導電實驗器
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磁力線觀察實驗5套
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磁力轉盤
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磁性實驗操作材料
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磁懸浮燈泡
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立體電磁場實驗
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趣味導電球
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輝光球
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電動機模型演示
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電路實驗套裝
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靜電擺球
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靜電泡沫球
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DIY電磁鐵
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大屏數顯萬用表 Large screen professional digital multimeter
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