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| faseroptisches Siegel | |||
| fibre optic: 61 phrases in 12 subjects |
| Antennas and waveguides | 1 |
| British usage, not spelling | 1 |
| Communications | 4 |
| Construction | 1 |
| Earth sciences | 2 |
| Electronics | 2 |
| General | 1 |
| Industry | 7 |
| Information technology | 1 |
| Materials science | 1 |
| Optics branch of physics | 39 |
| Technology | 1 |