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 |