"mainly covering" is a correct and usable phrase in written English.
You can use this phrase to describe or discuss something that primarily focuses on a particular thing or concept. For example, "This article is mainly covering the economic policies of the Biden administration."
· A partial index, mainly covering the 19th century, is now available online at nationalarchives.gov.uk.
Most of the money, mainly covering 2012, stemmed from about 70 honorariums for President Clinton.
3. Whiffenpoofs – Yale University Although we're mainly covering UK societies, we couldn't help but include the wonderfully-named Whiffenpoofs, Yale University's a capella group.
A summary of these activities is presented, mainly covering the composition design, property tests, techniques for HIP joining and coating, and activation analysis.
In the present paper a model is introduced which describes the liquid holdup and the axial pressure gradient in co-current gas/liquid flow in horizontal tubes with a small liquid holdup (εL s$̌0.04), mainly covering the stratified-wavy and annular flow regimes.
The need for external resources, mainly covering funding, human resources, materials and information, makes organizations potentially dependent on their external resources.
To the east, the Pleistocene Recent sediments mainly cover the narrow strip of the Nile Valley, around the cultivated lands, with local Pliocene outcrops covering the older rocks.
Not long ago, "Taliban media" would have seemed an oxymoron; when they held power in Afghanistan, their media operations consisted mainly of covering up human faces in oil paintings hanging in Kabul ministries.
But we also aspire to offer distinctive coverage of stories inside America, and in the ten months since we launched the program, that has mainly meant covering Presidential politics.
MR: So you're going to mainly be covering this new record, but will you also be performing some of your older hits?
That said, they don't try to be everywhere, covering mainly the leading financial centres.
