 |
| |||
| varifocal (Varifocal lenses allow an infinite number of focusing distances for near, intermediate and far vision) | |||
| varifocal | |||
| с переменным фокусным расстоянием: 39 phrases in 14 subjects |
| Astronautics | 3 |
| Automated equipment | 1 |
| Biology | 1 |
| General | 1 |
| Makarov | 1 |
| Mass media | 7 |
| Medical | 1 |
| Nanotechnology | 1 |
| Optics branch of physics | 1 |
| Photography | 1 |
| Polygraphy | 3 |
| Quantum electronics | 4 |
| Security systems | 2 |
| Technology | 12 |