The phrase "a main factor influencing" is correct and usable in written English.
It can be used when discussing the primary elements that affect a particular outcome or situation.
Example: "Economic stability is a main factor influencing the growth of small businesses in the region."
Alternatives: "a key element affecting" or "a significant contributor to".
The temperature in concrete is a main factor influencing concrete carbonization, chloride diffusion and the corrosion rate of steel bars in the concrete.
When soybean aphid populations were increasing, aphid abundance was a main factor influencing the four major predator groups (Anthocoridae, Nabidae, and exotic and native Coccinellidae).
Furthermore, the model helps to identify the main physical processes leading to the creation of disordered graphite, suggesting that plasma evolution does not follow a Boltzmann-Saha equilibrium and that radiative recombination is a main factor influencing the thermal evolution of the plasma and the diamond target.
Shean and Woods also believed that incisor overjet acted as a main factor influencing the extraction choice of the lower arch [[22]].
Since deserts are water-limited environments, water is a main factor influencing the presence and growth of trees.
The minimization of music-specific processing demands in the present study could be a main factor influencing the observed right-lateralization of WM processing of musical pitch.
And the amplitude A is the main factor influencing S1 of α5.
A reality suggesting that the kind of religiosity and the substance of religious fundamentalism seen in a specific society and not the degree of religious affairs a society practices is the main factor influencing acceptance or rejection of evolution.
In the case of frequency methods, a frequency stability of a localized emitter is the main factor influencing on the location error.
A value of post-filter ionized calcemia at day 1 below 0.54 mmol/L was the main factor influencing a filter lifespan above 24 h.
A Finnish study showed that the main factor influencing the distribution of water rails was the extent of vegetation cover, with the highest densities in the most vegetated areas; the presence of other marshes nearby was also significant.
