数字: figure; digit; numeral; char ...交换: exchange; swap; interchange; ...实验: experiment; test; trial run程序: procedure数字交换程序: data exchange program数字交换: digit switching; ds digital switching数字交换机: digital exchange数字交换区: digital exchange area实验程序: experimental procedure包交换实验网络: experimental packet switching service本地数字交换: dle digital local exchange程控数字交换: program controling of digital exchange数字交换单元: digital switching element; dse digital switch element; dsu digital switching unit数字交换电路: digital switched circuit数字交换矩阵: dsm digital switching matrix数字交换连接: dxc digital exchange connection数字交换模块: dsm digital switch module; dsm digital switching module数字交换能力: switched digital capability数字交换网路: digital switching network数字交换网络: dsn digital switching network数字交换系统: des digital exchange system; digital switched system数字交换线路: digital switched circuit数字交换中心: digital switching center直接数字交换: direct digital transfer自动数字交换: ads; automatic digital switching
