“人工交换”的概念、定义、翻译、参考文献-科学参考

单词	人工交换
释义	人工交换 Encyclopedia 工学交换技术释 manual switching人工交换在电话通信的过程中，人工接收呼叫，人工控制接线、拆线等有关动作的交换方式。
随便看	seminal colliculus seminal duct seminal fluid seminal receptacle seminal stain seminal stain examination seminal stain preliminary test seminal stain test seminar Seminarium Annuntiationis seminary seminatural communities semi-natural ecosystem semi-natural landscape seminatural vegetation semi-nearness space semi-nested PCR seminiferous scale seminiferous tubule semi-non-Euclidean space seminorm semi-normal seminormality semi normal operator semi-normal operator

科学参考收录了854744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。