 |
| |||
| region of visibility; area of visibility | |||
| optical field | |||
| оптическое поле: 55 phrases in 14 subjects |
| Artillery | 1 |
| Astronautics | 1 |
| Cinematography | 1 |
| Electronics | 3 |
| Makarov | 10 |
| Mass media | 23 |
| Microelectronics | 1 |
| Military | 1 |
| Nanotechnology | 7 |
| Navigation | 1 |
| Physics | 2 |
| Polygraphy | 1 |
| Technology | 1 |
| Weapons and gunsmithing | 2 |