примежовий загороджувальний вогонь (для позначення перешкод)
obstruction light
boundary light
obstruction
bore obstruction
terrain obstruction
unmarked aerodrome obstruction
junction aid (obstruction aid)
obstruction aid (junction aid)
nonexplosive obstruction
L119 light gun (105 mm light gun)
blade tip light / main-rotor blade tip light
main-rotor blade tip light blade tip light
boundary
boundary dispute
boundary monitoring and analysis
cross-boundary interception
de jure boundary
national boundary
rear boundary
state boundary
Inter-Entity Boundary Line (IEBL)
boundary film
boundary friction
Bernoulli theorem on boundary energy
convergent zone of a boundary layer
kinematical boundary condition
laminar boundary layer
turbulent boundary layer
Reynolds number for boundary layer thickness
non-stable boundary layer
stable boundary layer
viscous instability of a boundary layer