one-(two-, three) dimensional steady flow

velocity potential equation for three-dimensional gas flow

three-dimensional flow

two-dimensional flow

all for one and one for all / one for all and all for one

Eulerian equation of one dimensional flow

one-dimensional flow

three-dimensional (3D) point position

three-dimensional virtual mass moment of inertia

three-dimensional element

description of object geometry in three-dimensional space

two-dimensional element

two-dimensional virtual mass moment of inertia

Bernoulli equation for steady barotropic flow of perfect fluid

quasi-steady flow

two-seat / two seat

one-dimensional element

three flow turbojet engine

stationary (fixed, steady) target

steady-state error

steady climb

steady motion of a fluid

steady temperature

one-way UAV / one-way attack UAV (OWA UAV)

ad hoc working group on unification of dimensional practices

fractal (FRACTional dimensionAL)

three brigades abreast

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

non-retractable three-leg landing gear

three-blade tail rotor

three-component balance

three-man crew

three-point landing