прилад для прослуховування крізь стіну (напр. стетоскоп)
wall listening microphone
wall-to-wall turning diameter
listening device
surreptitious listening device
passive listening device
listening post
listening silence
listening surveiilance
check for listening devices
underwater listening post
gaining information by use of listening posts
surreptitious listening
radio listening service
passive listening
air listening post
safety and arming device / safety-and-arming device
air intake device / air-intake device
blast wall
back-wall
wall cooling
wall of a cartridge case
wall of shell
dividing wall
corrugated wall
perforated wall
porous wall
wall
adiabatic wall temperature
wall roughness
side wall
wall locker
wall shelter