”电是什么”这章的问题把一个泡沫小球,用细线穿上,放在太阳下晒一晒,放到刚刚梳好的头发上,先被吸引,后被弹开,为什么
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![”电是什么”这章的问题把一个泡沫小球,用细线穿上,放在太阳下晒一晒,放到刚刚梳好的头发上,先被吸引,后被弹开,为什么](/uploads/image/z/11693683-19-3.jpg?t=%E2%80%9D%E7%94%B5%E6%98%AF%E4%BB%80%E4%B9%88%E2%80%9D%E8%BF%99%E7%AB%A0%E7%9A%84%E9%97%AE%E9%A2%98%E6%8A%8A%E4%B8%80%E4%B8%AA%E6%B3%A1%E6%B2%AB%E5%B0%8F%E7%90%83%2C%E7%94%A8%E7%BB%86%E7%BA%BF%E7%A9%BF%E4%B8%8A%2C%E6%94%BE%E5%9C%A8%E5%A4%AA%E9%98%B3%E4%B8%8B%E6%99%92%E4%B8%80%E6%99%92%2C%E6%94%BE%E5%88%B0%E5%88%9A%E5%88%9A%E6%A2%B3%E5%A5%BD%E7%9A%84%E5%A4%B4%E5%8F%91%E4%B8%8A%2C%E5%85%88%E8%A2%AB%E5%90%B8%E5%BC%95%2C%E5%90%8E%E8%A2%AB%E5%BC%B9%E5%BC%80%2C%E4%B8%BA%E4%BB%80%E4%B9%88)
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