combustion zone

double-zone combustion chamber

grid zone / grid-zone

zone standard time (zone time) (ZST)

killing zone / kill zone

grid zone designation / Grid Zone Designator

grey-zone / grey zone (international relations)

hundred-per-cent zone (one-hundred-per-cent zone)

no-fire zone / no fire zone

flight restriction zone / flight restricted zone (FRZ)

can-annular burner / combustion chamber

combustion air holes

combustion alteration

combustion gas

combustion limit

combustion modifier

combustion of explosive

combustion of fuel

combustion product

combustion section

detonation combustion

internal combustion

internal combustion engine (IC eng)

combustion analyzer

combustion chamber intake ports

combustion head

velocity of combustion

exposed to combustion chamber

high-velocity combustion

knocking combustion

accelerated combustion

annular combustion chamber

cannular combustion chamber