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| optical flat | |||
| optically flat | |||
| оптически плоский: 22 phrases in 11 subjects |
| Automated equipment | 1 |
| Cables and cable production | 1 |
| Electronics | 1 |
| Lasers | 2 |
| Makarov | 1 |
| Mass media | 6 |
| Metrology | 4 |
| Microelectronics | 1 |
| Nanotechnology | 2 |
| Optics branch of physics | 1 |
| Technology | 2 |