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关注:1
2013-05-23 12:21
求翻译:Attract the iron filings with the rubber magnet, then approach with the steel magnet. Change the poles, then you will see some of the filings jump away.是什么意思?![]() ![]() Attract the iron filings with the rubber magnet, then approach with the steel magnet. Change the poles, then you will see some of the filings jump away.
问题补充: |
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