 |
|
resonance-frequency : 60 phrases in 15 subjects |
| Antennas and waveguides | 1 |
| Astronautics | 1 |
| Electrical engineering | 2 |
| Electronics | 11 |
| Geophysics | 3 |
| GOST | 1 |
| Makarov | 3 |
| Military | 2 |
| Nuclear and fusion power | 1 |
| Physics | 3 |
| Radioengineering | 1 |
| Seismology | 2 |
| Silicate industry | 1 |
| Technology | 21 |
| Telecommunications | 7 |