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电话交换区 diànhuà jiāohuànqū
agric. telephone exchange
horticult., IT exchange area
telecom. telephone exchange area
电话交换区①一个交换局的业务区 GB ②多个交换局,但属于统一资费的业务区 US diànhuà jiāohuànqū
telecom. exchange area
电 话交换区: 14 phrases in 6 subjects
Communications1
Electronics1
General2
Information technology2
Technology2
Telecommunications6