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| infra-red ray | |||
| heat ray; infrared beam | |||
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| infrared radiation; infrared radiation Electron magnetic radiation whose wavelengths lie in the range from 0.75 or 0.8 micrometer to 1000 micrometers | |||
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Infrarotstrahl : 2 phrases, 2 sujets |
| Électronique | 1 |
| Génie mécanique | 1 |