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| 环路检查; 循环检验 | |||
| 循环校验 | |||
| 循环检查 | |||
| 循环检测; 回送检验 | |||
| English thesaurus | |||
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| echo check (ssn) | |||
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loop check : 5 phrases in 4 subjects |
| Aviation | 1 |
| Electronics | 1 |
| Space | 2 |
| Telecommunications | 1 |
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