 |
| duration curve: 44 phrases in 19 subjects |
| Astronautics | 1 |
| Automated equipment | 1 |
| Construction | 2 |
| Economy | 1 |
| Electrical engineering | 1 |
| Electronics | 3 |
| Energy industry | 6 |
| Energy system | 1 |
| General | 1 |
| Hydraulic engineering | 1 |
| Hydrology | 5 |
| Makarov | 1 |
| Medical | 2 |
| Melioration | 2 |
| Natural resourses and wildlife conservation | 2 |
| Road works | 1 |
| Solar power | 1 |
| Technology | 6 |
| Water resources | 6 |