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$800
壓克力面板。
尺寸: 200 x 200 x 3mm。
裝有空心螺旋管線圈1個，裝線端子2個，附導線1組。
Used throughout the physics laboratory to study electricity and magnetism. Enameled copper wire wound on a plastic core.
Equipped with brass binding posts mpunted on an acrylic base.
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