数字: figure; digit; numeral; char ...交换: exchange; swap; interchange; ...交换子系统: sss switching subsystem; sws switching subsystem本地交换子系统: local switching subsystem路由交换子系统: rss route switching subsystem模拟交换子系统: analog switching subsystem网络和交换子系统: nss网络交换子系统: nss network switching subsystem网络与交换子系统: network and switching subsystem数字交换系统: des digital exchange system; digital switched system核心网点交换子系统: core nodal switching subsystem全数字交换系统: fully digital switching system时分数字交换系统: time division digital switching system用户数字交换系统: customer digital switching system数字交换: digit switching; ds digital switching数字交换机: digital exchange数字交换区: digital exchange area数字交换机, 分布式系统环境: dse路由转换子系统: route switching subsystem群组转换子系统: gss grouswitch subsystem本地数字交换: dle digital local exchange程控数字交换: program controling of digital exchange数字交换程序: data exchange program数字交换单元: digital switching element; dse digital switch element; dsu digital switching unit数字交换电路: digital switched circuit
