светофильтр: 121 phrases in 16 subjects |
Armored vehicles | 1 |
Astronautics | 2 |
Chemistry | 16 |
Cinematography | 5 |
Construction | 2 |
Electrical engineering | 2 |
Measuring instruments | 1 |
Medical appliances | 1 |
Military | 2 |
Optics branch of physics | 1 |
Physics | 1 |
Polygraphy | 20 |
Radio | 5 |
Surveying | 6 |
Technology | 55 |
Радиоактивное излучение | 1 |