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  • 25

    2018-05

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  • 25

    2018-05

    保持系電磁鐵的講解

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  • 23

    2018-05

    首屆中國北方五金博覽亮點紛呈仍有“殘缺”

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  • 23

    2018-05

    五金配件的進口與國產之爭

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  • 23

    2018-05

    電磁鐵磁場方向的判斷

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  • 23

    2018-05

    電磁鐵的歷史

    1822年,法國物理學家阿拉戈和呂薩克發現,當電流通過其中有鐵塊的繞線時,它能使繞線中的鐵塊磁化。這實際上是電磁鐵原理的最初發現。1823年,斯特金也做了一次類似的實...

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