自动长途电话交换机
automatic toll switching system
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长途电话自动交换机
automatic toll switching system
自动长途电话交换机
automatic toll switching system
自动电话机自动电话机系统
automatic telephone set
自动交换自动交换机
automatic exchange
长途交换机-长途电话局
Tolerant
半自动电话交换机
automanual telephone switchboard
semi-automatic telephone switch board
步进制市内用自动电话交换机
step-by-step system local automatic telephone exchange
汇接用纵横制自动电话交换机
concourse-connection longitudinal-transverse auto-telephone exchange
内部自动电话交换机
unit automatic exchange
全继电器制自动电话交换机
all relay automatic telephone system
市内电话自动交换机
automatic local exchange
小型自动电话交换机
UAX Unit Automatic Exchange
专用自动电话交换机
private automatic telephone exchange
private automatic branch exchange
Battered
PABX
自动电话交换机
automatic telephone exchange
automatic exchange
dial telephone exchange
automatic telephone switchboard
automatic telphone exchange
dial exchange
纵横制自动电话交换机
crossbar automatic telephone exchange
crossbar type automatic telephone switch board
longitudinal-transverse system automatic telephone exchange
longitudinal-crossbar auto-telephone exchange
长途电话交换机
long distance telephone exchange
程控数字长途电话交换机
SPC digital toll exchange
立接制长途电话交换机
switching system
demand basis toll
长途电话自动接续系统
toll switching system
Automatic
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