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类光 : 48 phrases in 14 subjects |
| Agriculture | 2 |
| Aviation | 1 |
| Chemistry | 5 |
| Dermatology | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 1 |
| General | 1 |
| Oil / petroleum | 1 |
| Polymers | 3 |
| Reproductive biology | 1 |
| Shipbuilding | 2 |
| Technology | 26 |
| Water resources | 2 |
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