 |
| load center: 34 phrases in 17 subjects |
| Agriculture | 1 |
| Astronautics | 1 |
| Automated equipment | 1 |
| Construction | 1 |
| Electrical engineering | 3 |
| Electricity | 1 |
| Electronics | 4 |
| Energy industry | 3 |
| Energy system | 3 |
| Firefighting and fire-control systems | 1 |
| Hydraulic engineering | 1 |
| Information technology | 1 |
| Military | 3 |
| Oil / petroleum | 1 |
| Oil and gas technology | 1 |
| Technology | 6 |
| Thermal engineering | 2 |