 |
| |||
| hot cathode; thermionic cathode | |||
| indirectly-heated cathode | |||
| heater cathode | |||
| indirectly heated cathode; heating cathode | |||
| подогревный катод: 9 phrases in 6 subjects |
| Antennas and waveguides | 1 |
| Makarov | 2 |
| Physics | 2 |
| Rail transport | 1 |
| Technology | 1 |
| Радиоактивное излучение | 2 |