 |
| electrical arc: 72 phrases in 19 subjects |
| Aerohydrodynamics | 3 |
| Astronautics | 1 |
| Automated equipment | 5 |
| Aviation | 1 |
| Construction | 3 |
| Drilling | 1 |
| Electronics | 5 |
| Forestry | 1 |
| General | 1 |
| Makarov | 7 |
| Metallurgy | 8 |
| Oil / petroleum | 5 |
| Oil and gas | 2 |
| Oil and gas technology | 2 |
| Oilfields | 2 |
| Physics | 1 |
| Rail transport | 1 |
| Technology | 20 |
| Welding | 3 |