半自动电话局 semiautomatic exchange ; [通信] automanual telephone exchange
乡村自动电话局 rural automatic exchange ; community automatic exchange
区内自动电话局 [通信] community automatic exchange
区自动电话局 Community Automatic Exchange
专用自动电话局 dial private branch exchange
自动电话交换局 [通信] automatic telephone exchange
自动电话总局 [通信] dial central office ; DCO ; automatic central office
自动电话分局 branch dial office
自动电话支局 branch dial office
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