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| infrared (radiation) | |||
| infra-red | |||
| infrared | |||
| podczerwień: 29 phrases in 12 subjects |
| Analytical chemistry | 9 |
| Chemistry | 2 |
| Earth sciences | 1 |
| Food industry | 1 |
| Health care | 1 |
| Lighting other than cinema | 1 |
| Medical | 1 |
| Microsoft | 5 |
| Natural sciences | 3 |
| Piezoelectric crystals | 2 |
| Semiconductors | 1 |
| Thermal Energy | 2 |