【电学】拨号工具，辅助程序【电学】刻度盘辅助设备

dialling

rotary dial in which dialling preselected numbers is prevented telephone set

key selection (touch-tone dialling)

post-dialling delay【通信】

through dialling【通信】

dial key【通信】;dialling key【通信】

alternating current dialling equipment

direct dialling transmission, on the exchange side