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红外线 光谱 : 17 phrases in 10 subjects |
| Agriculture | 1 |
| Animal husbandry | 1 |
| Automobiles | 1 |
| Chemistry | 1 |
| Earth sciences | 4 |
| Engineering geology | 1 |
| General | 1 |
| Geophysics | 1 |
| Shipbuilding | 4 |
| Technology | 2 |
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