 |
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| cathode chaude; cathode thermo-électronique; cathode thermoélectronique | |||
| cathode à chauffage indirect; cathode autonome | |||
| cathode à chauffage indirecte | |||
| подогревный катод: 7 phrases in 5 subjects |
| Antennas and waveguides | 1 |
| Electronics | 1 |
| Radio | 2 |
| Technology | 1 |
| Радиоактивное излучение | 2 |