циркуляр (документ з відомостями тимчасового характеру); директивна вказівка
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 cross-section fuselage
circular section fuselage
circular-section frame
crescent-shaped circular arc aerofoil section
circular arc aerofoil section
flat-convex circular arc aerofoil section
circular vortex
semi-circular deviation
circular scan
circular scanning mode
circular sweep
circular time base
center point method circular area