air-flow rate: 17 phrases in 13 subjects |
Astronautics | 1 |
Biotechnology | 1 |
Construction | 2 |
Energy industry | 1 |
Hovercraft | 1 |
Makarov | 1 |
Medical | 1 |
Nautical | 2 |
Nuclear physics | 2 |
Pharmacology | 1 |
Refrigeration | 2 |
Torpedoes | 1 |
Weapons of mass destruction | 1 |