短語(yǔ)詞組短語(yǔ)private branch exchange access line 專用小交換機(jī)聯(lián)結(jié)通道;[通信]專用小交換機(jī)聯(lián)接通道PBXL Private Branch eXchange Line 專用小交換機(jī)線路 返回 private branch exchange line