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| binary coded decimal interchange code | |||
| 二-十进制交换码: 12 phrases in 8 subjects |
| Aviation | 2 |
| Business | 1 |
| Earth sciences | 1 |
| Electronics | 3 |
| Information technology | 1 |
| Multimedia | 1 |
| Space | 1 |
| Telecommunications | 2 |
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