defence in depth; multiple safeguards; layered protection
Technical term used in security, engineering, and risk management for a strategy that employs several independent protective layers so that if one fails, others still provide protection.
The concept of defence in depth is important at nuclear power plants.
This system ensures high safety through multiple safeguards.
防御 is a general term for defence or protection, while 多重防護 specifically refers to a layered, multi-barrier approach.
Compound of 多重 (multiple, multi-layered) and 防護 (protection, defence).