оптическая система связи: 77 phrases in 12 subjects |
Astronautics | 3 |
Computer networks | 5 |
Economy | 1 |
Electronics | 3 |
Household appliances | 1 |
Information technology | 3 |
Mass media | 20 |
Military | 18 |
Nanotechnology | 2 |
Physics | 1 |
Technology | 14 |
Telecommunications | 6 |