three-dimensional (3D) point position

one-(two-, three) dimensional steady flow

three-dimensional virtual mass moment of inertia

three-dimensional element

velocity potential equation for three-dimensional gas flow

three-dimensional flow

description of object geometry in three-dimensional space

three-point landing

three-point resection

two-dimensional flow

two-dimensional element

Eulerian equation of one dimensional flow

ad hoc working group on unification of dimensional practices

two-dimensional virtual mass moment of inertia

one-dimensional element

one-dimensional flow

fractal (FRACTional dimensionAL)

launching position (missile position)

changeover from travelling position to fire position

position and navigation unit / position navigation unit (PNU)

in position / in-position

three brigades abreast

3CF (three column format 1. Factor - What; 2. Deduction, Analysis / Implication – Why; 3. Output - So What)

three flow turbojet engine

non-retractable three-leg landing gear

three-blade tail rotor

three-component balance

three-man crew

three-pointer electric indicator

three-pointer inductive indicator

three-blade propeller

last three

precision three-site radar