“private branch exchange”的概念、定义、翻译、参考文献-科学参考

单词	private branch exchange
释义	private branch exchange [`prī·vǝt `branch iks´chānj] ^{COMMUNICATIONS} A telephone exchange serving a single organization, having a switchboard and associated equipment, usually located on the customer's premises; provides for switching calls between any two extensions served by the exchange or between any extension and the national telephone system via a trunk to a central office. Abbreviated PBX.
随便看	differential stage differential steam calorimeter differential stress differential synchro differential temperature survey differential thermal analysis differential thermogravimetric analysis differential thermometer differential thermometric titration differential timing differential topology differential transducer differential transformer differential-transformer transducer differential voltage gain differential voltmeter differential wind differential winding differential windlass differential wound field differentiating circuit differentiating network differentiation differentiation antigen differentiator

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。