Урок 176 (осн). Телеграфный аппарат
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![[Павел ВИКТОР] Урок 176. Задачи на уравнение теплового баланса](https://sun9-10.userapi.com/impg/A0N1KcHf5ItMaKUH5HXZuo8ntVWdo3Aw0NuV4g/LzC5u35a7M8.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=960d29553d7a2a52d0f49005273415e7&c_uniq_tag=v1OgPmK5npx7123Zc1rqjTGW90yiDaTsPFriB4XTzoM&type=video_thumb)
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