磁铁的性质

Properties of magnet

以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译

1
古代中国人接触了磁铁矿，开始了对磁性质的了解。
Ancient Chinese people into contact with magnetite, as he began to understand the nature of magnetism.
2
转动磁场并不是用机械方法造成的，而是以交流电通于数对电磁铁中，使其磁极性质循环改变，可看作为转动磁场。
Rotating magnetic field is not caused by mechanical methods, but in AC pass in a few of the electromagnet, the nature of its magnetic cycle of change can be seen as rotating magnetic field.
3
极性是磁铁的固有性质。
Polarity is inherent in a magnet.

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