хімічний спостерігач
sentinel / sentry
air sentinel
rocket sentinel
shelter sentinel
CBR sentinel
post a sentinel
sentinel dog
sentinel post
gas gun; (tear) gas launcher
blister agent/ gas
blood gas
choking agent / gas
combustion gas
gas alarm / warning
gas analysis system
gas and electricity service
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
gas-particular filter unit (GPFU)
gas-tight clothing