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 |