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| 系统调用 | |||
| system calling: 16 phrases in 9 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Business | 1 |
| Communications | 2 |
| Electronics | 2 |
| Rail transport | 2 |
| Securities | 1 |
| Technology | 3 |
| Telecommunications | 3 |
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