“用户小交换机--专用电话小交换机”概念、定义、翻译-科学时代

单词	用户小交换机--专用电话小交换机
释义	市政工程词汇手册 PBX (private branch exchange) 专用电话小交换机，用户小交换机
随便看	information gap information gap information gate information gathering information gathering information-gathering convergence information generator information geometry information glut information goods information gradient information grid information guarantee information handling information handling information-handling system information hardness information headline information highway information highway information highway information highway information highway information hour information hour

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

PBX (private branch exchange)