电话局 telephone exchange ; telephone station ; Telephone office ; telephone exchange office
市内电话局 local telephone bureau ; [通信] local telephone office
电话局容量 capacity of telephone exchange ; fitted capacity
电话局忙时 office busy hour ; exchange busy hour
国际电话局 international exchange ; International Telephone Office ; International Telephone Exchange
长途电话局 [通信] trunk exchange ; long distance ; [通信] toll office ; LD
中央电话局 central telephone exchange ; central telephone bureau ; CO ; centralized telephone exchange
中央长途电话局 toll centre
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
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