"preliminary comparison" is a correct and usable part of a sentence in written English.
You can use it to describe the process of examining two or more things for the purpose of establishing similarities and/or differences. For example, "We conducted a preliminary comparison of the two models to determine which one was more efficient."
One of the most exciting results from the project, Tuscan's teachers says, is that a preliminary comparison of standardized test scores show that students participating in the long-term turnoff program score higher than those not participating.
A preliminary comparison is made with a tuned Arakawa Jacobian.
Also shown, are some preliminary comparison of point source data and GEANT simulations.
The t-test was used for preliminary comparison of the mean age in the migraine group versus the control group.
A preliminary comparison of the raw labels resulted in a matching of 38.9% between the labels of the two subjects.
A preliminary comparison of three methods for generation of mu-maps for MR/PET scanners is presented.
A preliminary comparison of simulation results with measurements carried out on a dedicated reduced-scale mock-up is briefly discussed.
A preliminary comparison showed that, at national level, the Italian dwellings are quite well represented by the sample.
A brief Sect. 5 presents a preliminary comparison of the revisions in potential and sustainable growth estimates, which shows the lower revisions associated to our methodology.
Furthermore, using the data gathered during second Martian year on the orbit, we have conducted preliminary comparison between seasonal cycles of two successive Martian years.
A preliminary comparison between DPS and CADI drift measurements revealed substantial differences between the vertical (Vz) and horizontal (Vh) drift velocities determined by the two digital ionosondes.
