【生活】灭火装置、稳固地布置在飞行器上

operational test for water fire-extinguishing system【安全】

fire-extinguishing plant, stationarily-arranged with hydrant

fire-extinguishing plant, automatic

production of fire-extinguishing substances

fire-extinguishing powder

fire-extinguishing foam

fire-extinguishing plant,

stationarily-arranged fire-extinguishing plant