The phrase "approximation is applicable" is correct and usable in written English.
It can be used in contexts where you are discussing the relevance or suitability of an approximation in a particular situation or analysis.
Example: "In this case, the approximation is applicable, as the error margin is within acceptable limits."
Alternatives: "approximation is relevant" or "approximation is suitable."
By introducing a modified von Neumann solution, this error approximation is applicable to problems with variable coefficients.
The asymptotic, physical optics (PO) approximation is applicable to electromagnetic scattering analysis of electrically large, conducting objects, which is important for various applications, such as radar cross-section (RCS) calculations.
Two extreme cases of the TSV geometry are addressed: disc-vias (with height-to-diameter ratios below 0.25), when plane stress approximation can be used, and rod-vias (with height-to-diameter ratios above 2.5), when plane strain approximation is applicable.
The model with only viscous transport in bed and the linear driving force approximation for the uptake rate is the recommended option for modeling PSA operations, provided that the LDF approximation is applicable, since it is easier to handle numerically and reduces to the equilibrium model in the limiting case of large adsorption rate constants.
These authors hence showed that a 2D plain strain approximation is applicable to shearing with parallel tools.
As it was mentioned above, the adiabatic approximation is applicable for calculation of lower levels of the energy spectrum.
The latter technique requires no immediate approximations, is applicable to any reasonable diffusivity field and is therefore the preferred approach.
On the basis of the P-1 approximation, which is applicable due to the large optical thickness of combustion products, various ways of spectral averaging for absorption and scattering coefficients are suggested.
In other words, the Carathéodory approximation scheme is applicable to a class of DPSDEs.
It follows from the theorem that the approximation (6) is applicable even for and any small if.
