auto-exchange telephone

machine driven switching system

机动制自动电话交换机

computer telephone exchange

电脑自动电话交换机

crossbar automatic telephone system

纵横制自动电话交换机

unit automatic exchange

内部自动电话交换机

private automatic telephone exchange

专用自动电话交换机

code switch automatic telephone system

码条式自动电话交换机

identifier circuit

(自动电话交换机的) 识别电路

all relay automatic telephone system

全继电器制自动电话交换机

step-by-step system local automatic telephone exchange

步进制市内用自动电话交换机

concourse-connection longitudinal-transverse auto-telephone exchange

汇接用纵横制自动电话交换机

Western panel type automatic telephone switch board

西部板式自动电话交换机

Technical requirements of digital SPC automatic telephone exchange

GB/T15542-1993数字程控自动电话交换机技术要求

automatic local exchange

市内电话自动交换机

automatic toll switching system

长途电话自动交换机

automatic switching of telegraph and telephone

电报-电话自动交换

crossbar private automatic branch exchange system

纵横制自动电话小交换机

automatic telex exchange

自动用户电报交换机

electronic multiple automatic exchange

电子复式自动交换机