хімічне спостереження; служба хімічного спостереження
mine watching
watching mine
watching
mine watching radar
gas gun; (tear) gas launcher
gas and electricity service
service gas mask
branch (military/service branch, armed service)
separate from active service / the service
Y service (Y-service) / Y-station
regional meteorological service/ regional weather service (RWS)
emergency service / emergency operations service
blister agent/ gas
blood gas
choking agent / gas
combustion gas
gas alarm / warning
gas analysis system
gas bleed
gas chamber
gas defense
gas density
gas mask
gas mask test
gas mechanism
gas piston
gas plug
gas precautions
gas terrorism
gas turbine engine
gas-operated
gas-operated weapon