【电学】二次私有支流交换 (二次电话外延设置)，电话通讯

second private branch exchange (second telephone extension set) telephonic communication

暂无补充释义。

相关词条

second-rate

second class

second Shannon coding theorem【通信】

growth enterprise board; second board market; hi-tech board

rate of second glance

FEV1 forced expiratory volume in the first second

percentage of forced expiratory volume in first second to forced vital capacity\nFEV1\n医

second-order