 |
| air filter: 288 phrases in 43 subjects |
| Air conditioners | 1 |
| Astronautics | 3 |
| Automated equipment | 6 |
| Automobiles | 17 |
| Aviation | 1 |
| Biotechnology | 3 |
| Caspian | 3 |
| Combustion gas turbines | 18 |
| Construction | 41 |
| Ecology | 6 |
| Electrical engineering | 2 |
| Electronics | 7 |
| Energy industry | 16 |
| Facilities | 1 |
| Gas processing plants | 1 |
| General | 7 |
| Household appliances | 1 |
| Law | 2 |
| Makarov | 9 |
| Measuring instruments | 2 |
| Mechanics | 1 |
| Medical appliances | 1 |
| Microelectronics | 1 |
| Military | 8 |
| Mining | 3 |
| Molikpaq | 12 |
| Natural resourses and wildlife conservation | 4 |
| Nautical | 2 |
| Nuclear and fusion power | 2 |
| Nuclear physics | 3 |
| Occupational health & safety | 1 |
| Oil / petroleum | 3 |
| Oil and gas | 2 |
| Oilfields | 1 |
| Pharmacy and pharmacology | 2 |
| Production | 2 |
| Refrigeration | 1 |
| Sakhalin | 6 |
| Technology | 37 |
| Telecommunications | 6 |
| Tengiz | 1 |
| Transport | 35 |
| Ventilation | 7 |