эхосигнала : 71 phrases in 19 subjects |
Antennas and waveguides | 1 |
Astronautics | 7 |
Aviation | 2 |
Computers | 1 |
Household appliances | 1 |
Mass media | 3 |
Medical appliances | 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 |