покажчик проходу (напр. у мінному полі)
marker antenna / marker beacon antenna
clear / cut a gap
exploit a gap
fill / plug the gap
gap-filler radar
hasty gap crossing
seal the gap
secure a gap
time gap
air-gap / air wal
gap crossing operation
constricted air gap spark plug
gap wind
lighting gap
gap filling
gap-filling radar
spark-gap anti-TR tube
spark-gap TR tube
spark-gap transmit-receive tube
spark-gap tube
gap
close the gap
column gap
time-gap of column
slat gap
dye marker
flag marker
foam dye marker
invisible marker
laser paint marker
marker lights (mark lights)
paint gun marker