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| 公用交换数据网 | |||
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| 公共交换数据网 | |||
| English thesaurus | |||
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| PSDN (Telephony) | |||
| public switched data network: 9 phrases in 5 subjects |
| Artificial intelligence | 1 |
| Communications | 2 |
| Computer networks | 1 |
| Electronics | 2 |
| Telecommunications | 3 |
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