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| двойной диод-пентод с переменной крутизной характеристики | |||
| пентод переменной крутизны | |||
| пентод с переменной крутизной; пентод с удлинённой характеристикой | |||
| Regelpentode: 5 phrases in 4 subjects |
| Antennas and waveguides | 1 |
| Electronics | 1 |
| Radio | 2 |
| Technology | 1 |
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