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##====전자석,electromagnet =,electromagnet 전자석 electromagnet
MKL
[[자성,magnetism]]
[[자기장,magnetic_field]]
Cmp 영구자석 NN:영구자석
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https://ko.wikipedia.org/wiki/전자석
https://simple.wikipedia.org/wiki/Electromagnet
https://en.wikipedia.org/wiki/Electromagnet
...
NN:전자석

Up: [[자석,magnet]]