The phrase "adds materially" is correct and usable in written English.
It can be used to indicate that something contributes significantly or substantially to a situation or outcome.
Example: "The new policy adds materially to our efforts in reducing carbon emissions."
Alternatives: "contributes significantly" or "makes a substantial addition".
An acceptable margin on €4bn of revenue at Iberia would add materially to the group result.
But Chinese currency policy is adding materially to the world's economic problems at a time when those problems are already very severe.
"We see this as more likely enhancing the longer-term value of Facebook for both users and advertisers rather than adding materially to financial performance in the very near term," he said.
If such deficits were to add materially to the average debt burden, investors might fret that governments will attempt either to inflate away their debts or to pass them on to other countries, so will demand higher rates from all borrowers as protection.
However, interactions between average values of these institutions and shocks, now captured by time dummies, do not add materially to the explanation of changes in unemployment.
Therefore, more studies of the same basic design as Interphone, based on recall of phone use, no matter how carefully designed and conducted, are unlikely to add materially to our knowledge.
The lawyer adds the suit "could materially impact how business is done on The Street moving forward".
Plus, adds Ranade, Kimono is materially different from earlier efforts like Dapper or Needlebase, because it's outputting to APIs and is starting off by focusing on the developer user base, with an expansion to non-technical users planned for the future.
It added, "These statements materially contrasted with negative public statements made by the company".
