The phrase "a relatively large area" is correct and usable in written English.
You can use it when describing a space or region that is larger than average but not excessively so, often in comparisons or analyses.
Example: "The study was conducted in a relatively large area, encompassing several towns and rural regions."
Alternatives: "a fairly extensive area" or "a moderately sized area".
A relatively large area of agricultural soil (16%) is above the prevention limit for at least one metal.
The single input and multiple output data are attained using multiport electrodes fabricated over a relatively large area single nanotube ensemble.
The beam is divergent (spreads out) so that after two or three reflections between ionosphere and Earth it covers a relatively large area.
Spoken over such a relatively large area, Northwest Germanic had at least minor dialectal distinctions from the start, but several linguistic innovations spread throughout.
We found that whilst industrial areas, airport and mixed land covered a relatively large area, parks and other functional green spaces had a relatively small extent.
We note that the beamline is designed to provide a relatively large area exposure, with good wavefront quality in intensity and phase.
The German Rhineland covers a relatively large area, traversing a region extending from the foreland of the Alps to the western part of the Northern European Plain.
Interestingly, a wood rabbit craft was also designed and showed a good visible-light-driven photocatalytic performance in a relatively larger area for different concentrations of HCHO.
The sequence of assembly of optimized areas in a relatively larger area and geometric optimization of this area is continued until the required area size to be cooled is obtained.
This indicates that the high integration area has an open visual property that could be visually permeable to a relatively larger area.
This may have been due to the fact that the audience have liked a focused discussion a limited topic rather than a composite message on different aspects of a relatively larger area at a time.
