 |
|
optical range : 45 phrases in 17 subjects |
| Antennas and waveguides | 1 |
| Anti-air artillery | 1 |
| Automated equipment | 2 |
| Aviation | 1 |
| Ecology | 1 |
| Makarov | 2 |
| Mass media | 2 |
| Meteorology | 2 |
| Military | 12 |
| Mining | 1 |
| Nautical | 4 |
| Navigation | 3 |
| Physics | 3 |
| Polygraphy | 1 |
| Radioengineering | 2 |
| Space | 1 |
| Technology | 6 |