 |
|
vertical range : 25 phrases in 14 subjects |
| Air defense | 4 |
| Anti-air artillery | 3 |
| Automated equipment | 2 |
| General | 1 |
| Geology | 1 |
| Measuring instruments | 1 |
| Meteorology | 1 |
| Military | 2 |
| Mining | 1 |
| Nautical | 2 |
| Navigation | 1 |
| Optics branch of physics | 1 |
| Space | 2 |
| Technology | 3 |