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位置脉冲 : 36 phrases in 13 subjects |
| Agriculture | 1 |
| Air defense | 3 |
| Artificial intelligence | 1 |
| Automobiles | 4 |
| Aviation | 3 |
| Earth sciences | 1 |
| Electronics | 7 |
| Geophysics | 5 |
| Multimedia | 1 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 6 |
| Telecommunications | 1 |
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