“synchronous digital hierarchy，SDH”的概念、定义、翻译、参考文献-科学参考

单词	synchronous digital hierarchy，SDH
释义	synchronous digital hierarchy，SDH Encyclopedia 工学【复用概念】释 synchronous digital hierarchy，SDH同步数字体系基于同步复用技术的数字复用体系。
随便看	information distribution information divergence information divide information domain information downloading behavior Information ecological chain information ecology information ecology theory Information Economics information economics information economy information education information efficiency information element information encountering information encryption information engineering information engineering facility information engineering facility, IEF information engineering method information entropy information entropy metamaterials information environment information estimation information ethics

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。