 |
| |||
| квадратрон | |||
| двухсеточная лампа | |||
| тетрод; экранированная лампа; четырёхэлектродная лампа | |||
|
四极 管 : 63 phrases in 5 subjects |
| Electronics | 9 |
| General | 15 |
| Military | 1 |
| Radio | 6 |
| Technology | 32 |
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