optical system : 192 phrases in 21 subjects |
Aviation | 1 |
Communications | 12 |
Computers | 3 |
Cultural studies | 1 |
Earth sciences | 3 |
Electronics | 4 |
General | 13 |
Health care | 2 |
Industry | 2 |
Information technology | 16 |
Medical | 4 |
Medical appliances | 5 |
Microelectronics | 19 |
Natural resourses and wildlife conservation | 2 |
Optics branch of physics | 87 |
Physics | 10 |
Radio | 1 |
Technology | 2 |
Telecommunications | 2 |
Transport | 2 |
Video recording | 1 |