 |
|
air flow : 81 phrases in 22 subjects |
| Agriculture | 12 |
| Automated equipment | 1 |
| Aviation | 8 |
| Biotechnology | 1 |
| Chemistry | 3 |
| Coal | 1 |
| Construction | 1 |
| Earth sciences | 5 |
| General | 1 |
| Life sciences | 1 |
| Materials science | 1 |
| Mechanic engineering | 1 |
| Medical | 1 |
| Medical appliances | 1 |
| Metallurgy | 1 |
| Military | 1 |
| Municipal planning | 1 |
| Natural resourses and wildlife conservation | 4 |
| Nuclear physics | 4 |
| Radiation | 2 |
| Technology | 4 |
| Transport | 26 |