Транзистор дегеніміз не? Жұмыс істеу принципі қалай?
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35:52
Стабилитрон дегеніміз не ?
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11:30
Резистор дегеніміз не?
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28:12
Усилитель на транзисторе
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35:26
Оптрон дегеніміз не ?
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1:32:06
İlk tarih öncesi insanlarla ilgili vahiyler
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1:10:44
Renkli Hitler
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1:51:00
FELAKETİMSİ OLAYLAR | İnsanlığı Şekillendiren Felaketler
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31:26