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| 红外 线探测: 19 phrases in 13 subjects |
| Agriculture | 1 |
| Astronautics | 1 |
| Aviation | 3 |
| Compressors | 1 |
| Earth sciences | 1 |
| General | 2 |
| Military | 1 |
| Oil / petroleum | 2 |
| Radio | 1 |
| Rail transport | 2 |
| Shipbuilding | 2 |
| Space | 1 |
| Technology | 1 |
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