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| 公用中心交换机 | |||
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| 中心交换机; 中心局交换服务 | |||
| 电话宜通内线交换方式 | |||
| 集中式用户交换机; 局控用户交换机; 虚拟用户交换机可构成虚拟专用网 | |||
| English thesaurus | |||
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| central office exchange service | |||
| centre exchange | |||
| International Exhibition Statistics Union | |||
| central exchange | |||
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Centrex : 8 phrases in 3 subjects |
| Aviation | 1 |
| Electronics | 2 |
| Telecommunications | 5 |