 |
| pipe flow: 44 phrases in 23 subjects |
| Aerodynamics | 2 |
| Aerohydrodynamics | 1 |
| Automobiles | 1 |
| Construction | 5 |
| Ecology | 2 |
| Electronics | 1 |
| Energy industry | 4 |
| Food industry | 2 |
| Hydraulic engineering | 2 |
| Makarov | 5 |
| Mathematics | 1 |
| Mechanics | 1 |
| Medical | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 2 |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Physics | 2 |
| Plumbing | 1 |
| Pumps | 1 |
| Technology | 4 |
| Telecommunications | 1 |
| Thermal engineering | 1 |