The phrase "thorough revision" means to carefully review and make changes to something in a detailed and comprehensive manner.
Sentences with «thorough revision»
We provide thorough revision of all the course work projects. (american-writers.org)
As skilled information technology academic writers, we are able to provide thorough revisions for the information technology papers and assignments. (american-writers.org)
Until then, writers have to do thorough revisions on a paper. (topwritersreview.com)