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| ultra DMA/66 protocol | |||
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| ultra DMA/33 protocol | |||
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| ultra 160/m protocol | |||
| 超 160/m 协议: 37 phrases in 13 subjects |
| Aviation | 1 |
| Commerce | 1 |
| Communications | 1 |
| Cryptography | 1 |
| Earth sciences | 1 |
| Electronics | 8 |
| Information technology | 7 |
| Metallurgy | 1 |
| Multimedia | 3 |
| Project management | 5 |
| Space | 2 |
| Technology | 1 |
| Telecommunications | 5 |
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