“SDH--SDH (Synchronous Digital Hierarchy)”概念、定义、翻译-科学时代

单词	SDH--SDH (Synchronous Digital Hierarchy)
释义	电子通信与自动控制技术词汇手册 SDH (Synchronous Digital Hierarchy) 同步数字体系
随便看	tape container tape control unit tape correction tape covering tape data processing taped distance tape device taped insulation taped length tape drive tape drum tape editing tape facsimile tape format tape gauge tape gauge tape grass tape guide tape head signal tape identification unit tape image tape inclined position winding tapeinidium tapeinocephaly tape insulated coil

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。

SDH (Synchronous Digital Hierarchy)