The phrase "equilibrium model" refers to a concept or theory that describes a balanced state where opposing forces or factors are in equal or proportional amounts, resulting in stability. Full definition
In our general equilibrium model of residential location and community choice, households base optimizing decisions on commuting costs, school quality, and land rents. (nber.org)
The problem is that the equation mentioned is meant to describe equilibrium model response, rather than the transient response over time. (realclimate.org)
One of the simplest radiative equilibrium models involves the assumption of a so - called grey atmosphere, where the absorption coefficient is assumed to be independent of wavelength. (scienceofdoom.com)