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MS Symptoms Early

Acronym: SDD

Category: NASA Acronyms

Meaning / Stands for:

	Acronym	Meaning
	NB	No-Bias (Relay)
	LESS	Leading Edge Structure Subsystem
	EVSC	Extravehicular Suit Communications
	ACRIM	Active Cavity Radiometer Irradiance Monitor
	STD	Shuttle Test Director
	DAE	Data Acquisition EquiPment
	MD	Manual Disconnect
	SEMS	Space Environment Monitor System
	PBPS	Post-Boost Propulsion System(s)
	EES	Escape Ejection Suit