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systems operator : 142 phrases in 31 subjects |
| Advertising | 2 |
| Automated equipment | 1 |
| Aviation | 6 |
| Business | 1 |
| Caspian | 1 |
| Communications | 2 |
| Economics | 1 |
| Electrical engineering | 1 |
| Electronics | 1 |
| Energy industry | 16 |
| Energy system | 13 |
| European Union | 5 |
| General | 3 |
| Information technology | 2 |
| Loading equipment | 1 |
| Mass media | 3 |
| Mechanics | 2 |
| Medical | 2 |
| Medical appliances | 2 |
| Metallurgy | 1 |
| Military | 24 |
| Mining | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 10 |
| Physics | 1 |
| Programming | 3 |
| Robotics | 4 |
| Signalling | 8 |
| Technology | 11 |
| Telecommunications | 12 |
| Welding | 1 |