 |
| air intake: 103 phrases in 21 subjects |
| Agriculture | 1 |
| Automobiles | 2 |
| Aviation | 2 |
| Construction | 7 |
| Earth sciences | 4 |
| Electronics | 1 |
| Energy industry | 5 |
| Engines | 14 |
| General | 18 |
| Health care | 1 |
| Industry | 1 |
| Materials science | 1 |
| Mechanic engineering | 9 |
| Medical | 3 |
| Metallurgy | 1 |
| Mining | 1 |
| Municipal planning | 1 |
| Refrigeration | 1 |
| Technology | 13 |
| Transport | 16 |
| Ventilation | 1 |