“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	Nong Jia Bao Nong Khai non-glutinous rice non glutinous sorghum non-glycoside inotropic agents nongonococcal cervicitis nongonococcal urethritis，NGU non-governmental higher education non-governmental library non-governmental organization nongovernmental organization non-governmental organizations non-governmental water organization non-government institution of higher education non-government organizations for special education nongranular leukocyte non-gravitational effect non-gravitational force non-gravitational motion non-gray atmosphere non-grey atmosphere Nongsangjiyao Nongsangyishicuoyao Nongshuo Nongzhengquanshu

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