防火区 meaning in Chinese

fire conservancy
fire control unit
fire district
fire prevention district
fire protection zone
fire-proof district
fz = fire zone

Specification for fire proof electric cables for engine fire zone and airframe use
发动机防火区和机体用耐火电缆规范
No fire area
重点防火区
Aircraft - environmental conditions and test procedures for airborne equipment - resistance to fire in designated fire zones
飞行器.机载设备的环境条件和试验程序.指定防火区内的耐火性
Specification for general requirements for equipment for use in aircraft - all equipment - environmental conditions - resistance to fire in designated fire zones
飞机设备一般要求规范.第2部分:各种设备.第3节:环境条件.第13小节:规定防火区的防火性