俄语 ⇄ 英语

средняя вероятность опасного отказа всей цепи аварийной защиты 强调
安全系统	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)