 |
| |||
| IR filter; infra-red filter | |||
| infrared filter | |||
| инфракрасный светофильтр: 7 phrases in 5 subjects |
| Mass media | 1 |
| Military | 1 |
| Polygraphy | 1 |
| Security systems | 1 |
| Technology | 3 |
|
| |||
| IR filter; infra-red filter | |||
| infrared filter | |||
| инфракрасный светофильтр: 7 phrases in 5 subjects |
| Mass media | 1 |
| Military | 1 |
| Polygraphy | 1 |
| Security systems | 1 |
| Technology | 3 |