 |
| electron tube: 114 phrases in 18 subjects |
| Antennas and waveguides | 2 |
| Astronautics | 4 |
| Automated equipment | 8 |
| Electrical engineering | 1 |
| Electronics | 22 |
| General | 1 |
| High energy physics | 3 |
| Household appliances | 4 |
| Information technology | 3 |
| Makarov | 10 |
| Mass media | 6 |
| Military | 4 |
| Navigation | 1 |
| Physics | 1 |
| Pipelines | 1 |
| Technology | 36 |
| Telecommunications | 6 |
| Trademark | 1 |