The phrase "a secondary layer of" is correct and usable in written English.
It can be used to describe an additional or supplementary level of something, often in contexts like analysis, structure, or complexity.
Example: "The report revealed a secondary layer of meaning that was not immediately apparent in the initial findings."
Alternatives: "an additional layer of" or "a supplementary layer of".
In the first step, a secondary layer of Mg(OH 2 was introduced by boiling the samples in NaOH solution.
SEOUL, South Korea — Threats by North Korea and displays of military resolve by South Korea and the United States have begun to unsettle foreign investors' confidence in the South, creating a secondary layer of worries for Seoul and Washington.
The hypothesis was that a secondary layer of CNCs at the WPI-stabilized oil-water interface could protect the interfacial protein layer against in vitro gastric digestion by pepsin at 37 °C.
In the vast majority of these countries, opting out from the NHS is not possible and, therefore, these health subsystems represent a secondary layer of coverage, on top of the NHS, which usually grants access to a variety of services in the private sector [1, 2].
It is imperative that you have a secondary layer of waterproofing protection underneath the shingles and the siding.
From iNs, a secondary layer of transcription factors guide cells to particular neurons.
It also launched a secondary layer on top of these word trios as its monetisation play last week.
By enabling a secondary layer on top of the blockchain, such as Lightning, to bring better scalability and performance to the system, will help everyone in the ecosystem profit.
On top of that, a robust secondary layer of developers use the APIs of other developers in their technology stacks to quickly assemble new business models.
The docking motif then provides a crucial secondary layer of selectivity for the MAP kinase of interest.
Moral verdicts on the author, the raison d'être of many biographies, is a secondary layer that can color the reception of an artist's oeuvre but cannot nullify work that retains its expressive power.
