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| 支柱信号 | |||
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| 基准信号; 校正信号参考信号; 比较信号参考信号校正信号; 校正信号 | |||
| опорные сигналы: 8 phrases in 3 subjects |
| Electrical engineering | 1 |
| Electronics | 3 |
| Technology | 4 |
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