 |
| operating characteristic: 47 phrases in 17 subjects |
| Agriculture | 2 |
| Automated equipment | 2 |
| Aviation | 1 |
| Aviation medicine | 1 |
| Economy | 1 |
| Electrical engineering | 1 |
| Electronics | 17 |
| Mathematics | 3 |
| Medical | 5 |
| Melioration | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Quality control and standards | 2 |
| Statistics | 2 |
| Technology | 4 |
| Transport | 1 |
| Valves | 1 |