bore surface

стінки каналу ствола

erosion of bore (in the bore)

naval surface forces, surface fleet, surface forces

surface-to-surface artillery

surface-to-surface missile (SSM)

ballistic surface-to-surface missile

control surface / control-surface

guided surface-to-surface missile

surface-to-surface

surface-to-surface delivery system

surface-to-surface missile (rocket)

axis of the bore

barrel bore wear level

bore brush (swab)

centerline of the bore

extended range full bore (ERFB)

helix along the axis of the bore

muzzle bore sight

rifle bore cleaner

smallbore (small-bore)

smooth-bore (smoothbore)

smooth-bore artillery

bore obstruction