 |
| return air: 88 phrases in 24 subjects |
| Airports and air traffic control | 1 |
| Astronautics | 2 |
| Business | 1 |
| Construction | 9 |
| Electronics | 1 |
| Energy industry | 4 |
| Firefighting and fire-control systems | 4 |
| Geology | 2 |
| Heating | 1 |
| Mass media | 1 |
| Mathematics | 1 |
| Medical appliances | 2 |
| Military | 1 |
| Mining | 4 |
| Molikpaq | 12 |
| Nanotechnology | 1 |
| Oil / petroleum | 1 |
| Polymers | 1 |
| Refrigeration | 19 |
| Technology | 12 |
| Textile industry | 2 |
| Thermal engineering | 1 |
| Torpedoes | 1 |
| Ventilation | 4 |