 |
|
lower operating : 18 phrases in 15 subjects |
| Antennas and waveguides | 1 |
| Artillery | 1 |
| Construction | 2 |
| Economics | 1 |
| Electrochemistry | 1 |
| Energy industry | 1 |
| Energy system | 2 |
| Mass media | 1 |
| Military | 1 |
| Operation systems | 1 |
| Polygraphy | 1 |
| Radioengineering | 1 |
| Security systems | 2 |
| Technology | 1 |
| Thermal engineering | 1 |