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如何给铁消磁

更新时间: 2020-11-16 00:00:00     

加热高温、猛烈的撞击都可以给带磁物体消磁。

铁的在带电线圈里可以加强磁性,当断电时磁性会自动消失,不会带磁,因为铁不是永久性磁铁。

钢就不同了,钢磁化后还后还有磁性的。

关键词: 如何

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