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espectral : 80 phrases in 17 subjects |
| Antennas and waveguides | 6 |
| Communications | 2 |
| Earth sciences | 2 |
| Electronics | 8 |
| Environment | 1 |
| Health care | 1 |
| Lighting other than cinema | 24 |
| Mathematics | 8 |
| Medical | 3 |
| Metrology | 2 |
| Physical sciences | 1 |
| Piezoelectric crystals | 3 |
| Radio | 2 |
| Radiology | 1 |
| Statistics | 8 |
| Transport | 1 |
| Vacuum tubes | 7 |
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