Применение электромагнитных устройств переменных магнитных потоков
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![Применение электромагнитных устройств[The use of electromagnetic devices]](https://sun9-48.userapi.com/rj6LBbhB09WlCv8i50gguKOuO529KX1gPq8vvg/X_igrdF8qyY.jpg)
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