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照相显影 : 17 phrases in 9 subjects |
| Agriculture | 2 |
| Air defense | 1 |
| Animal husbandry | 1 |
| General | 5 |
| Life sciences | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Polygraphy | 1 |
| Technology | 3 |
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