 |
| maintenance of equipment: 18 phrases in 14 subjects |
| Business | 1 |
| Construction | 1 |
| Economy | 1 |
| Electric machinery | 1 |
| General | 1 |
| Logistics | 1 |
| Mathematics | 1 |
| Military | 1 |
| Production | 1 |
| Programming | 4 |
| Quality control and standards | 2 |
| Technology | 1 |
| Trade classification | 1 |
| Weapons of mass destruction | 1 |