[1] Secret Restricted Data (->“IEEE Standard Dictionary”)
[2] Self Reading Dosimeter (->“IEEE Standard Dictionary”)
[3] Step-Recovery Diode (->“IEEE Standard Dictionary”)
[4] Secondary Receive Data
[5] Shuttle Requirements Document (->“NASA Acronym List”)
[6] Site Requirements Document (->“NASA Acronym List”)
[7] Software Requirements Document (->“NASA Acronym List”)
[8] Systems Requirements Document (->“NASA Acronym List”)