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数字 输入 /数字输出 : 18 phrases in 11 subjects |
| Aviation | 3 |
| Business | 1 |
| Communications | 1 |
| Computers | 2 |
| Earth sciences | 1 |
| Electronics | 2 |
| Information technology | 1 |
| Multimedia | 2 |
| Space | 1 |
| Technology | 2 |
| Telecommunications | 2 |
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