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Magnetism Natural Attraction without pheromones. History of Magnets More than 2000 years ago, rocks called lodestones were found in the region of Magnesia. - ppt download
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Outline and Lineup of Demagnetizer(Alternating-current (AC)、Capacitor、Inverter、Direct-current (DC) inversion)|Nihon Denji Sokki Co., Ltd.
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