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общая лексика
товарообращение
общая лексика
малый [лёгочный] круг кровообращения
медицина
кровообращение в лёгких
лёгочное кровообращение
In physics, circulation is the line integral of a vector field around a closed curve. In fluid dynamics, the field is the fluid velocity field. In electrodynamics, it can be the electric or the magnetic field.
Circulation was first used independently by Frederick Lanchester, Martin Kutta and Nikolay Zhukovsky. It is usually denoted Γ (Greek uppercase gamma).