circular-section frame

круглий / кільцевий шпангоут

frame cross member / frame cross-member

circular cross-section fuselage

circular section fuselage

crescent-shaped circular arc aerofoil section

circular arc aerofoil section

flat-convex circular arc aerofoil section

echoing cross-section; echoing cross section

section of control surface section

radar cross-section / radar cross section (RCS); radar signature; radar crossover

circular error probable (CEP)

circular trajectory

circular call sign

circular groove (of ammunition)

circular leaf spring

circular magazine drum

circular traffic

circular velocity

circular augmenting charge

circular vortex

semi-circular deviation

circular scanning mode

circular time base

center point method circular area

circular defense

circular distribution

circular fore sight

circular formation

circular navigation guidance