 |
|
viewing system : 41 phrases in 16 subjects |
| Acoustics | 1 |
| Automated equipment | 1 |
| Aviation | 1 |
| Electronics | 3 |
| Makarov | 1 |
| Mass media | 3 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Military | 10 |
| Nautical | 1 |
| Radioengineering | 6 |
| Robotics | 1 |
| Security systems | 1 |
| Space | 1 |
| Technology | 7 |
| Welding | 2 |