вихрова зона
vorticity
vorticity advection
vorticity vector
diffusion of vorticity
dissipation of vorticity
flux of vorticity
Helmholtz theorem on vorticity diffusion in a viscous liquid
Helmholtz vorticity theorem
arid region
army readiness region
flight information region (FIR)
geostrategic region
strategic region
air defense region (ADR)
depot distribution region
ensure peace and stability in the region
hydrodynamic lubrication region
irrotational region
stagnation region
dead region
search and rescue region
simply coherent region
simply connected region
transition region
densely populated (densely-populated) area (region) / territory / country
confusion region
region of interest (ROI)
maritime search and rescue region
ITU Region