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

单词	plesiochronous digital hierarchy，PDH
释义	plesiochronous digital hierarchy，PDH Encyclopedia 工学【复用概念】释 plesiochronous digital hierarchy，PDH准同步数字体系基于同频（比如时钟不同源，允许小范围差异）的异步复用技术的数字复用体系。
随便看	*-convergent sequence convergent sequence convergent sequence of numbers convergent sequence of sets convergent series convergents of continued fraction convergent spectrum convergent subsequence convergent subsequence principle convergent synthesis convergent thinking convergent thinking method convergent thread convergent validity convergent wave convergent with probability one convergescence converging converging angle converging beam converging diffuser converging-diverging nozzle converging lens converging light converging magnetic mirror

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。