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串行- 并 行-串行 : 69 phrases in 12 subjects |
| Air defense | 3 |
| Automobiles | 3 |
| Aviation | 2 |
| Construction | 1 |
| Earth sciences | 1 |
| Electronics | 9 |
| General | 12 |
| Information technology | 1 |
| Metallurgy | 1 |
| Space | 5 |
| Technology | 26 |
| Telecommunications | 5 |
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