"duly explained" is a correct phrase and it can be used in written English.
It means that something has been explained in a proper or appropriate manner. Example: The instructions for the assignment were duly explained by the teacher to ensure that all students understood the requirements.
Finding them and preventing the crime then becomes a matter of procedure rather than high-seas adventure, duly explained in this book.
When Seretse proposes, having duly explained his true identity, Ruth imagines a new life away from the misty drizzle of London, a life that, she assures her fiance, will be taken "moment by moment – together".
But upon arrival in Nuevo Laredo now, there is a menacing calm, duly explained by Raymundo Ramos Vasquez, once a journalist for El Mañana, the local paper with a reputation for fearless reporting on the narcos, but now director of the Nuevo Laredo Committee for Human Rights.
Scientific progress, Kuhn argued, is not simply the continual discovery of new facts duly explained.
If the are agreeable to participate the consent form is explained and duly signed.
The participants are duly informed about the research explained by the team and are enrolled in the study after having assigned the written informed consent form.
He duly asked, "What's a doula?" I explained that she was a cross between a midwife, a coach, a mentor and a super hero for pregnant women.
The experimental protocol was comprehensively explained to patients undergoing tissue biopsies and duly signed written consent forms were obtained.
The study protocol was explained to all participants and signed informed consent was duly obtained from each participant.
Lanchester's lexicon approaches his subject in something like that mischievous spirit, but is also on a more duly diligent mission to explain.
"Duly elected officials, not federal judges" should redraw the state's congressional map, he explained.
