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谐波 数 : 40 phrases in 11 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Electric machinery | 6 |
| Electronics | 6 |
| Hydroelectric power stations | 1 |
| Information technology | 1 |
| Mathematics | 3 |
| Radio | 1 |
| Space | 2 |
| Technology | 16 |
| Telecommunications | 2 |
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