用户自动交换机
Private Automatic Branch Exchange， PABX
private automatic branch exchange
PABX
电报自动交换系统
telegraph automatic switching system
私用自动交换机
battered post
private automatic exchange
Pax
用户专用自动交换机
private automatic branch exchange
专用自动交换机
buckling modal
PABX
dial private branch exchange
private automatic exchange
自动电报交换
automatic switching of telegraph
自动电报交换中心
automatic message-switching center
自动交换电报设备
automatic switched telegraph equipment
长途电话自动交换机
automatic toll switching system
程控数字自动交换机
PABX:PrivateAuntomaticBranchExchange
电传打字机自动交换设备
automatic teletypewriter switching equipment
电子复式自动交换机
electronic multiple automatic exchange
电子自动交换机
air start valve
electronic anutomatic exchange
electronic automatic exchange
EAX
发电机用自动调压器
automatic voltage regulator for generator