Russian ⇄ English

средняя вероятность опасного отказа в случае возникновения аварийной ситуации stresses
sec.sys.	PFDAVG (average probability of dangerous failures of a safety function of the entire safety-instrumented system Alex Lilo); average probability of dangerous failures of a safety function of the entire safety-instrumented system (PFDAVG Alex Lilo)