фонова карта (2D карта, на яку накладаються додаткові дані) (також - base map)
background information
background noise
background check
universal background checks
background radiation
background sound pressure level
natural background radiation
final background sound pressure level
background
background count
background counting rate
background investigation
planimetric map syn. line map
grid map / gridded map
army map service
artillery map
base map
communications map
general map
going map
image map
log map
map
map analysis
map carrier
map convergence
map distribution
map exercise
map grid
map maneuver
map reading
map reference