SDN, SD, SDAS Scientific Data Automation System, SDOC Selective Dynamic Overload Control, SDCCH Standard Dedicate Control Channel, SDH optical fiber communication network, SDM Selective Dissemination on Microfiche, SDL Specification and Description Language, SDDF Subscriber Digital Distribution Frame, SDDS Spin Decoupling Difference Spectroscopy, SDN Synchronous Digital Transmission Network, SDCCH Stand-alone Dedicated Control Channel 返回 SDL