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工程科 : 261 phrases in 10 subjects |
| Education | 9 |
| Electronics | 8 |
| General | 219 |
| Geology | 1 |
| Historical | 2 |
| Hydrology | 1 |
| Military | 4 |
| Name of organization | 4 |
| Technology | 12 |
| Telecommunications | 1 |
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