хімічне загородження
altitude barrier
antisubmarine barrier
barrier materials
barrier minefield
barrier plan
barrier restricted area
barrier system
barrier troops / blocking detachments (units) / anti-retreat forces
boom barrier (boom gate)
concrete barrier
portable vehicle-arresting barrier (PVAB)
sonic barrier
vehicle-arresting barrier
barrier inspection
crash barrier
noise barrier
barrier
vapor barrier boot
lateral barrier
geographic barrier
geographical barrier
radar barrier
radar barrier ship
gas gun; (tear) gas launcher
blister agent/ gas
blood gas
casualty gas
choking agent / gas
combustion gas
gas alarm / warning
gas analysis system
gas and electricity service