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| infra-red absorption | |||
| infrared absorption | |||
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红外线吸收 : 12 phrases in 9 subjects |
| Agriculture | 2 |
| Animal husbandry | 1 |
| Automobiles | 1 |
| Chemistry | 1 |
| Ecology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Oil / petroleum | 1 |
| Refrigeration | 1 |
| Technology | 3 |
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