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系统输入控制 : 22 phrases in 12 subjects |
| Business | 1 |
| Computer networks | 2 |
| Data processing | 2 |
| Earth sciences | 1 |
| Economy | 1 |
| General | 1 |
| Geophysics | 1 |
| Information technology | 5 |
| Metallurgy | 2 |
| Project management | 1 |
| Space | 4 |
| Technology | 1 |
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