The phrase "a varying size" is correct and usable in written English.
It can be used to describe objects or items that come in different dimensions or measurements.
Example: "The boxes are available in a varying size to accommodate different needs."
Alternatives: "a range of sizes" or "various sizes".
The packed bed was represented by spherical particles, whereby a varying size accounts for the variety of particle geometries in a combustion chamber.
The former, which is obtained by taking concentration points along a line, was needed because the film texture is non-isotropic, while the latter, which is obtained by repeated calculations of the scale of segregation over a varying size sample was needed, for a more accurate representation of this texture.
An adaptive version of this scheme was implemented in [19], allowing a varying size from 1 to 20 vectors for voiced speech sections and 1 to 8 vectors for unvoiced speech.
RFA was performed with a varying size (3, 3.5 or 4 cm) umbrella-shaped multi-tines needle electrode (LeVeen CoAccess RFA needle electrode, Boston Scientific, MA, USA), selected to match the size of the tumour.
Uniformity of size and shape of nanoparticles are important for issues related to biocompatibility as a widely varying size range may lead to non-uniform behavior of the nanoparticles both in vitro and in vivo[11].
There is general agreement between conductance values and a geometric model for a pore of varying size, depending upon the number of monomers or helical rods.
In order to make the model more realistic, more recent studies consider an epidemic model in a population with varying size (see [7 11]).
We formulate and analyze a deterministic mathematical model for the prevention of a disease transmitted horizontally and vertically in a population of varying size.
We applied a factor to MPF (positive) and average age (negative) to the homesteads within a block of varying size to induce the appearance of clustering at a given spatial scale.
We performed a coalescent simulation to determine whether neutral processes in a population of varying size can account for this bimodal allele frequency spectrum.
This clever promotion by Mary Chess Perfumes used the maker's name as a marketing tool; varying size bottles with different scents and pressed glass figural stoppers formed a complete set.
