 |
| irrotational: 68 phrases in 20 subjects |
| Aerodynamics | 5 |
| Aerohydrodynamics | 2 |
| Antennas and waveguides | 1 |
| Astronautics | 1 |
| Aviation | 1 |
| Construction | 3 |
| Energy industry | 1 |
| Geology | 3 |
| Geophysics | 1 |
| Hydromechanics | 4 |
| Makarov | 7 |
| Mathematics | 9 |
| Nanotechnology | 4 |
| Nautical | 4 |
| Oil / petroleum | 3 |
| Physics | 2 |
| Seismology | 4 |
| Solid-state physics | 2 |
| Technology | 10 |
| Transport | 1 |