The phrase "affirm previous" is correct and usable in written English.
It can be used when you want to confirm or validate something that was stated earlier in a conversation or document.
Example: "In our last meeting, we discussed the project timeline, and I would like to affirm previous agreements regarding the deadlines."
Alternatives: "confirm earlier" or "validate prior".
These effects affirm previous results on propellants with smaller fine and coarse AP sizes, where the burning rate is not enhanced by nano-Al.
The findings also affirm previous claims that the tools we've found are too well-made to be the first ever created, she explained.
Our results affirm previous research that nutcrackers are responsive to changes in their energetic environment, and that they are capable of projecting energy budgets well into the future.
The oxygen isotopic distinction between wild and domesticated sheep populations affirm previous observations that the ingestion of isotopically distinct water sources impacts body water oxygen isotopic composition and subsequent expression of δ18O values in herbivore tooth carbonates.
The additional experiments presented in the present work further affirm previous hypotheses about the effect of Cl− ions, acting as a capping agent on (0001) plane, and their major role in morphology control for 2D nanowalls and 1D nanostructures with large diameters.
The findings of this study affirm previous research on the likely employment outcomes of the highly-skilled/educated workers, whereas, the chance of human obliteration from the workforce is not foreseeable (Autor 2015; Autor and Price 2003; Autor et al. 2003; Neubert et al. 2015).
The Supreme Court also affirmed previous rulings that the Second Amendment ensured the right of individuals to take part in the defending of their liberties by taking up arms in an organized militia.
This study further affirms previous research on the skills business graduates require, such as critical thinking, negotiating, politicking, and communicating.
However, the most recent U.S. National Climate Assessment report affirms previous studies that climate change disproportionately impacts marginalized, vulnerable, and disadvantaged populations of all races.
Zappulla said the finding affirms previous reports, and provides new insights about the functions of two key proteins, Ku and Sir4.
Since growth rate and protein synthesis share common pathways, this stress response hits both processes simultaneously, affirming previous reports on the growth associated nature of recombinant protein production (Bentley et al. 1990; Shin et al. 1998).
