Reliability theory
label: نظرية الموثوقية @ar
label: Teorie spolehlivosti @cs
label: Теорія надійності @uk
label: Teoria dell'affidabilità @it
label: Теория надёжности @ru
label: Funktionssäkerhet @sv
description: science of the rate of failure of systems which are expected to have some resistance to external influences