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| 有用信号有效信号 | |||
| 有效信号; 有用信号 | |||
| Russian thesaurus | |||
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| ПС (http://goo.gl/uG0n3Z Artjaazz) | |||
| полезный сигнал: 5 phrases in 3 subjects |
| Computers | 1 |
| General | 3 |
| Information technology | 1 |
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