optical recording: 52 phrases in 14 subjects |
Astronautics | 3 |
Automated equipment | 2 |
Cement | 1 |
Electronics | 2 |
Household appliances | 8 |
Makarov | 3 |
Mass media | 14 |
Military | 2 |
Nautical | 1 |
Physics | 1 |
Publishing | 1 |
Quantum electronics | 1 |
Technology | 12 |
Telecommunications | 1 |