optical sound | |
adv. | оптическая фонограмма |
reproducer | |
gen. | воспроизводитель; репродуктор; громкоговоритель |
optical sound: 38 phrases in 8 subjects |
Automated equipment | 1 |
Cinematography | 1 |
Electronics | 2 |
Makarov | 4 |
Mass media | 12 |
Physics | 2 |
Technology | 12 |
Telecommunications | 4 |