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root cause analysis
auto.	根源分析
cryptogr.	根原因分析
reliabil.	根本原因分析
English thesaurus
root cause analysis
gen.	root cause investigation (Andrey Truhachev)
IT	A process of diagnosis to establish the origins of events, which can be used for learning from consequences, typically from errors and problems
Root Cause Analysis
abbr., proj.manag.	RCA (Yeldar Azanbayev)