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<h2 class="hd hd-2 unit-title">Hard and Soft Magnetic Materials</h2>
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<h4 class="hd hd-5">Transcripts</h4>
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<h2 class="hd hd-2 unit-title">Transformers</h2>
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<h3 class="hd hd-2">Transformers</h3>
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<h2 class="hd hd-2 unit-title">DC Motors</h2>
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<h3 class="hd hd-2">DC Motors</h3>
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