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| exhaust fan: 35 phrases in 16 subjects |
| Automobiles | 1 |
| Aviation | 2 |
| Caspian | 1 |
| Construction | 2 |
| Electronics | 3 |
| Metallurgy | 1 |
| Molikpaq | 4 |
| Nanotechnology | 2 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 2 |
| Public utilities | 1 |
| Sakhalin | 4 |
| Technology | 3 |
| Transport | 5 |
| United Nations | 1 |
| Ventilation | 2 |