sphere of invention sphere photometer sphere spark gap spherical aberration spherical astronomy spherical average spherical bearing spherical coordinates spherical dome spherical harmonic spherical-image amplifier spherical joint spherical journal spherical lapping spherical mirror spherical pair spherical paraboloid spherical pivot spherical roller bearing spherical sector |
sphere of invention област на техниката, към която се отнася едно изобретение Търсената дума е намерена |