fundamental equation of flow through the conduit of variable cross-section area

echoing cross-section; echoing cross section

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

Bernoulli equation for steady barotropic flow of perfect fluid

Eulerian equation of one dimensional flow

velocity potential equation for three-dimensional gas flow

variable-area record section

NATO fundamental security tasks

buried conduit wire circuit

taillight wiring conduit

carburetor degasser conduit

collector ring box power feed conduit

fundamental aerodynamics

fundamental frequency

cross-section area

cross-section area of stream filament

cross flow

frame cross member / frame cross-member

variable-area nozzle

variable-area plotting

variable-area recording (VAR)

variable-area propelling nozzle

wing-carry-through area

area of break-through

cross section

low-RCS target / low-radar-cross-section target

target scattering crossover / target scattering cross-section / electronic target profile

circular cross-section fuselage

critical cross-section

cross-section

blade cross-section

characteristic cross-section of a body

back-scattering cross section