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| raggi infrarossi | |||
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rayos infrarrojos : 23 phrases in 11 subjects |
| Agriculture | 2 |
| Communications | 3 |
| Earth sciences | 2 |
| Electronics | 3 |
| Fish farming pisciculture | 1 |
| General | 4 |
| Industry | 4 |
| Life sciences | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Natural sciences | 1 |