primary control surface

control surface / control-surface

naval surface forces, surface fleet, surface forces

primary control surfaces

surface-to-surface artillery

surface-to-surface missile (SSM)

guided surface-to-surface missile

surface-to-surface

surface-to-surface delivery system

surface-to-surface missile (rocket)

ballistic surface-to-surface missile

gunner's primary sight (GPS)

officer of primary responsibility

primary (fire) position

primary arm

primary armament

primary burn

primary sector of fire

primary high explosive

primary military occupational specialty (MOS)

primary mission

primary reserve

primary target

primary target line (PTL)

primary trainer

primary weapon

primary position

primary, alternate, contingency, emergency (PACE)

primary level training (PLT)

primary venturi

primary defect

primary cause

primary great circle spherical coordinate system