impact sprinkler nozzle
individual sprinkler nozzle
nozzle-in-nozzle type spray gun
nozzle-to-nozzle type spray gun
ratio of nozzle hole length nozzle diameter
side nozzle and coaxial nozzle powder feeding
act automatic fire-extinguishing sprinkler system
adjustable micro-sprinkler
agricultural sprinkler systems
area of sprinkler operation
Automatic Fire Sprinkler
automatic scanning and positioning sprinkler system
Automatic Sprinkler
自动喷水淋头
自动喷水器
自动灭火器
自动喷水
自动纚水器
自动喷洒器
自动洒水机
automatic sprinkler and fire alarm and fire detection system
automatic sprinkler and fire detection system
automatic sprinkler fire extinguishing system
automatic sprinkler fire-extinguishing system