 |
| exposed area: 28 phrases in 19 subjects |
| Architecture | 1 |
| Astronautics | 2 |
| Aviation | 2 |
| Cartography | 1 |
| Ecology | 2 |
| Electrical engineering | 2 |
| Electronics | 1 |
| Energy industry | 2 |
| Firefighting and fire-control systems | 1 |
| Gas processing plants | 1 |
| General | 1 |
| Informal | 2 |
| Makarov | 3 |
| Mathematics | 1 |
| Metrology | 1 |
| Military | 1 |
| Nautical | 2 |
| Technology | 1 |
| Thermal engineering | 1 |