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自动接线 : 16 phrases in 9 subjects |
| Antennas and waveguides | 1 |
| Automobiles | 2 |
| Aviation | 1 |
| Electronics | 4 |
| Geophysics | 1 |
| Information technology | 1 |
| Multimedia | 1 |
| Space | 1 |
| Technology | 4 |
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