 |
| эхосигнал: 68 phrases in 18 subjects |
| Antennas and waveguides | 1 |
| Astronautics | 7 |
| Aviation | 2 |
| Computers | 1 |
| Household appliances | 1 |
| Mass media | 3 |
| Military | 8 |
| Missiles | 1 |
| Nanotechnology | 10 |
| Nautical | 8 |
| Navigation | 6 |
| Oceanography & oceanology | 1 |
| Quality control and standards | 1 |
| Quantum electronics | 4 |
| Radiology | 2 |
| Technology | 6 |
| Telecommunications | 5 |
| Telephony | 1 |