parabolic girder parabolic load parabolic mirror parabolic partial differential equation parabolic reflector parabolic-reflector antenna paraboloid calotte paraboloid of revolution paracentric paracentrical parachor parachrosis parachute parachute beacon parachute braking parachute canopy parachute deployment device parachute flare parachute landing paracompound |
parabolic girder параболична ферма параболична греда Търсената дума е намерена |