The phrase "mainly centered on" is correct and usable in written English.
It is often used to describe the primary focus or subject of a sentence or a paragraph. Example: The presentation was mainly centered on the company's sales projections for the upcoming year.
The reasons for watching just one, for both males and females, were mainly centered on the lack of time.
The bank's investigation showed that its wrongdoing is mainly centered on another key benchmark, the Tokyo interbank offered rate.
Aviva said in a statement that it was in touch with some of its shareholders, and that their concerns "mainly centered on how we structure the compensation paid when we recruit executive directors and whether overall levels of remuneration, driven by the operating performance in 2011, appropriately reflect changes in shareholder value through the year".
We demonstrated that the economic activities of Tokyo are mainly centered on tertiary industries.
Previous studies were mainly centered on single stage inverters, while present and future studies mainly focus on two stage inverters.
The limitations of this study are mainly centered on the lack of a placebo or sham-stimulation group.
Although the system's benefits mainly center on being able to run more trains at higher speeds, the most important advancement will be in safety, supporters said.
The complicated twist of a plot mainly centers on Turkish (Jason Statham) and his pal, Tommy Stephen Grahamm), a pair of small-time hoods and illegal boxing promoters who just want to buy a trailer in a misadventure that inevitably intersects with all of the other nefarious goings-on.
Most healthcare providers accept ADHD as a genuine disorder, and the debate in the scientific community mainly centers on how it is diagnosed and treated.
This episode mainly centers on the issues of underage drinking, as the students of McKinley High School are coming drunk to school in increasing numbers.
Among healthcare providers the debate mainly centers on diagnosis and treatment in the much larger number of people with less severe symptoms., 8% of all United States Major League Baseball players had been diagnosed with ADHD, making the disorder common among this population.
