| English thesaurus | |||
| |||
| OS | |||
|
Operating : 36 phrases in 11 subjects |
| Computer networks | 1 |
| Economics | 4 |
| Electric machinery | 3 |
| Electrical engineering | 8 |
| Electricity generation | 2 |
| Mathematics | 1 |
| Power system protection | 5 |
| Risk Management | 2 |
| Statistics | 1 |
| Thermal Energy | 3 |
| Vacuum tubes | 6 |