The phrase "dominant role" is grammatically correct and can be used in written English.
Example: In a classic ballet performance, the prima ballerina plays the dominant role, commanding the stage with her flawless technique and emotive expressions.
In this case the effects of coupling plays the dominate role to the system response measures.
The front region (seed) plays the dominate role in the energy production, neutron multiplication and 233U breeding.
At high SR content, the negative effect of the poor interface interactions played the dominate role on determining the mechanical properties.
With the pH further increasing, the carboxyl groups are almost completely ionized and the redox reaction occurs only between hydroxyl and carbonyl groups, the contribution of pseudocapacitance drops to 33% and the double layer capacitance begins to play a dominate role.
Both atomic force microscope (AFM) and photoelectric studies suggest that the FeS2 quantum-sized particles play a dominate role in the photoelectric conversion of FeS2/TiO2 electrode, while the FeS2 large particles have less or even no contribution to the photo-current.
The results confirmed the dominate role that the warping moment played.
This implied that the SCW physical property variations due to the system pressure change could play some dominate roles on the heat transfer.
Thus, the ionized impurity scattering and grain size effect would play dominate roles in the mobility of carriers.
Meanwhile, the total gas flow rate plays the dominated role for overall dispersion of solid phase.
The Ce0.6Fe0.4O2-δ catalyst displays the best activity due to the dominated role of free Fe2O3 nanoparticles.
The conductor, Alan Gilbert, negotiated the difficult score with a sure hand, and the orchestra, in its major, often dominating, role, responded with skill and panache.
