Electrical conductors and insulator physical vector illustration scheme. Educational labeled graphic with energy flow from battery through steel and wood. Material and substance comparison explanation

Electrical conductors and insulator physical vector illustration scheme. Educational labeled graphic with energy flow from battery through steel and wood. Material and substance comparison explanation 剪貼畫、和美工 Image 145201599.

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Electrical Conductors And Insulator Physical Vector Illustration Scheme. Educational Labeled Graphic With Energy Flow From Battery Through Steel And Wood. Material And Substance Comparison Explanation 免版稅剪貼畫，向量插圖和庫存圖片. Image 145201599.

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Electrical conductors and insulator physical vector illustration scheme. Educational labeled graphic with energy flow from battery through steel and wood. Material and substance comparison explanation

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