The phrase "a very small variation" is correct and usable in written English.
It can be used when describing a minor difference or change in something, often in contexts like science, statistics, or general comparisons.
Example: "The experiment showed a very small variation in the results, indicating that the changes were negligible."
Alternatives: "a slight difference" or "a minimal change.".
The mayor pointed out that test scores might be tipped downward by only a very small variation in student performance from year to year.
The reverse phase transformation temperature increased along with a very small variation in transformation heat with an increase in prestrain.
But I kept the name "fsh" for the attractors which used the original formula, a very small variation on the formula in Pickover's book.
From our calculations, a very small variation is noted in lattice constant values of ScxY1−xN alloying system as a function of Y content, reflecting to appropriate alloying of ScN and YN.
The coding-decoding process causes almost no variation of the form factors in the MP3 case and a very small variation in the GSM case, even negative.
A very small variation in temperature, for example, can cause water to condense on the cave walls and dig into the rocks, leaving a record of the current state of the atmosphere outside.
On the other hand, the fact that the persons examined had a large variation in MEP urinary concentrations throughout a given day, but very small variation between days, may be related to their regular use of personal care products.
Dwivedi and Gopal [ 31] revealed that silver and gold nanoparticles are stable in a wider range of pH as they observed very small variation in the zeta potential values between pH 2 and 10 in their study using Chenopodium album.
Therefore, very small variation can be expected from an in vitro lifestyle.
Process systems often present multiple operating regions, for example as a result of grade changes, and some systems produce data with very small variation.
The surface passivated devices with gate bus isolation fully surrounding the source and drain regions showed extremely low off-state leakage currents of less than 20 nA/mm at 600 V, with very small variation.
