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| 出水口: 50 phrases in 10 subjects |
| Aerodynamics | 1 |
| Aviation | 3 |
| Construction | 2 |
| Ecology | 1 |
| Electronics | 8 |
| General | 23 |
| Geology | 1 |
| Oil / petroleum | 1 |
| Oil processing plants | 1 |
| Technology | 9 |
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