№3 Секретная техника НТКЗЯ
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![Главный секрет катушки индуктивности [азы в понятной форме]](https://sun9-22.userapi.com/1AyXFjPqGeVyWzTN_ORyEs5AH4EqhgpJ3WXong/116ZQFVxzKk.jpg)
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