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| P-code; precise code | |||
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| precision P code (GPS 卫星发射的 P 码) | |||
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精码 : 23 phrases in 8 subjects |
| Animal husbandry | 1 |
| Business | 1 |
| Computers | 1 |
| Electronics | 4 |
| Information technology | 4 |
| Space | 5 |
| Technology | 6 |
| Telecommunications | 1 |
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