природно-техногенная авария(Na-Tech accident; Na-Tech: natural events (known as Na-Tech, or from the English term 'natural hazards triggering technological accidents))
природно-техногенное событие(Na-Tech accident; Na-Tech: natural events (known as Na-Tech, or from the English term 'natural hazards triggering technological accidents))
природно-техногенное событие(Na-Tech accident; Na-Tech: natural events (known as Na-Tech, or from the English term 'natural hazards triggering technological accidents))