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缩 微胶片计算机输出 : 19 phrases in 12 subjects |
| Agriculture | 3 |
| Aviation | 1 |
| Data processing | 2 |
| Earth sciences | 1 |
| Electronics | 2 |
| General | 2 |
| Geology | 1 |
| Information technology | 1 |
| Multimedia | 1 |
| Space | 2 |
| Technology | 2 |
| Telecommunications | 1 |
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