 |
| |||
| operating system; OS (of a computer) | |||
| operational system | |||
| système opérationnel: 54 phrases in 13 subjects |
| Aviation | 21 |
| Communications | 4 |
| Computers | 10 |
| Earth sciences | 2 |
| Economy | 1 |
| Electronics | 1 |
| Environment | 1 |
| Finances | 1 |
| General | 1 |
| Information technology | 5 |
| Name of organization | 1 |
| Transport | 5 |
| United Nations | 1 |