The phrase "a supplementary function" is correct and usable in written English.
It can be used when referring to an additional role or purpose that supports a primary function or task.
Example: "The software includes a supplementary function that enhances user experience by providing personalized recommendations."
Alternatives: "an additional role" or "a supporting function".
A supplementary function of Excitation Control Systems (ECSs) for synchronous generators is that of a Power System Stabilizer (PSS).
The program has a supplementary function designed to correct ambient effects in the time series by referring to concurrently observed data (Ishiguro et al., 1984; Tamura et al., 1991).
Overall, CHD-FA was shown to possess broad-spectrum antibacterial activity, with a supplementary function of being able to down-regulate inflammation.
Only a subset of strains showed CRISPR/Cas bacteriophage resistance systems of different subtypes, suggesting a supplementary function in maintenance of chromosomal stability.
Comparison of single and sultr4;1/ sultr4;2 double knock-out mutants suggested that Sultr4;1 plays a major role and Sultr4;2 has a supplementary function [ 21].
As only a subset of polymorphic toxins delivered by T6SS encode a CDC123-like protein, it is likely to function in a supplementary role, perhaps as a secondary toxin injected into the target organism or as an auxiliary protein that regulates either the toxin, the immunity protein, or the secretory apparatus.
This observation has been interpreted as reactivation of memory traces and theoretical concepts originating with Marr [8] [12] suggest that spontaneous reactivation of memory traces after their initial encoding subserves a supplementary training function.
In the present report, we provide, for the first time, evidence indicating the production of these two trophic factors by epithelial breast cancer cells, indicative for a supplementary autocrine function of cancer cells.
Regardless of the boundary conditions, each of the displacement and rotation components of the sector plates is described as a linear superposition of a double Fourier cosine series and several supplementary functions introduced to accelerate the convergence of series representations.
The vibration problems are solved using an improved Fourier series method in which the in-plane displacements are expressed as the superposition of a double Fourier cosine series and four supplementary functions in the form of the product of a polynomial function and a single cosine series expansion.
Regardless of boundary conditions, each displacement and rotation component of the structures is invariantly expressed as the superposition of a Fourier cosine series and two supplementary functions introduced to remove any potential discontinuous of the original displacements and their derivatives.
