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| 控制信息; 传输程序通路; 程序通道 | |||
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| 控制信息; 传输程序通路; 程序通道 | |||
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program channel : 27 phrases in 8 subjects |
| Air defense | 1 |
| Earth sciences | 1 |
| Electronics | 8 |
| Geophysics | 1 |
| Information technology | 7 |
| Metallurgy | 1 |
| Space | 1 |
| Technology | 7 |
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