The phrase "a circular approximation" is correct and usable in written English.
It can be used in contexts involving mathematics, physics, or any field where approximating a circular shape or concept is relevant.
Example: "In our calculations, we used a circular approximation to simplify the complex geometry of the problem."
Alternatives: "a round estimate" or "a circular estimate".
The meniscus of the bridge is described using a circular approximation, which is reasonable under some conditions.
Then, a boundary segmentation methodology estimates a circular approximation of the optic disc boundary by applying mathematical morphology, edge detection techniques, and the circular Hough transform.
To avoid these issues, the work in [25] proposed a circular approximation to the coverage: {R}_{mathrm{cov}}left({mathrm{cell}}_iright)=begin{array}{c}hfill min hfill hfill forall ine jhfill end{array}left(frac{dleft({mathrm{cell}}_i,{mathrm{cell}}_jright)}{1+{left(frac{P_{tx}left({mathrm{cell}}_jright)}{P_{tx}left({mathrm{cell}}_iright)}right)}^{frac{1}{propto }}}right) (7).
Measurements are in μm using a circular approximation for each facet.
Finally, facet lens area was converted to facet diameter using a circular approximation for facet shape.
A simplified model of dynamic bridge strength based on the superposition of lubrication and circular approximation is incorporated in the simulation model.
A simplified model of dynamic bridge strength based on the superposition of lubrication and circular approximation is used in the simulation model.
Error due to circular approximation of crossbars is quantified and is found to be insignificant.
A simplified solution of dynamic bridge strength based on the superposition of lubrication theory and circular approximation is presented.
For GEO objects a circular orbit is a rather good approximation.
With this approximation, imaging becomes partially coherent and the highly MM fiber can be approximated as a circular detector of diameter d sensitive to the intensity of the field at the fiber plane.
