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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 |
centrex: 8 phrases in 3 subjects |
Aviation | 1 |
Electronics | 2 |
Telecommunications | 5 |