“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	track-up shot track-via-missile guidance track way track width tract tractability tractable Tractarians Tractate of the Most High One on Actions and Consequences Tractatus Coislinianus Tractatus Logico-Philosophicus tractility traction tractional retinal detachment traction control system traction control system，TCS traction converter traction drive traction drive system traction electric apparatus traction electric network traction fibre traction lift traction motor traction of fracture

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