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管子的 : 106 phrases in 14 subjects |
| Antennas and waveguides | 2 |
| Astronautics | 1 |
| Business | 2 |
| Construction | 2 |
| Drilling | 1 |
| Education | 1 |
| Electricity | 1 |
| Electronics | 9 |
| General | 45 |
| Law | 1 |
| Mathematics | 1 |
| Oil and gas | 2 |
| Oil processing plants | 3 |
| Technology | 35 |
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