 |
| surface discontinuities: 29 phrases in 14 subjects |
| Aerodynamics | 2 |
| Aerohydrodynamics | 4 |
| Astronautics | 1 |
| Aviation | 2 |
| Fish farming pisciculture | 1 |
| Geology | 5 |
| Hydraulic engineering | 1 |
| Hydrology | 2 |
| Makarov | 5 |
| Mechanics | 1 |
| Nanotechnology | 1 |
| Nautical | 2 |
| Oceanography & oceanology | 1 |
| Technology | 1 |