 |
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| infrared light | |||
| infra-red rays | |||
| infrared rays | |||
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| infrared beam | |||
| rayons infrarouges: 19 phrases in 10 subjects |
| Agriculture | 1 |
| Communications | 5 |
| Earth sciences | 4 |
| Electronics | 3 |
| Health care | 1 |
| Industry | 1 |
| Natural resourses and wildlife conservation | 1 |
| Natural sciences | 1 |
| Technology | 1 |
| Transport | 1 |