The phrase "additional narrowing" is correct and usable in written English.
It can be used when discussing the process of making something more specific or focused, often in contexts like research, analysis, or decision-making.
Example: "The additional narrowing of the criteria helped us identify the most suitable candidates for the position."
Alternatives: "further refinement" or "extra specification".
But pages tend to be slow-loading (removing the ubiquitous pictures of the site's weird-looking humanoid mascot might help), and almost any search requires an additional "narrow your search" step that further slows down the process.
Otherwise, additional narrow diffraction peaks were observed in the relatively low angle region, and the pattern was reasonably matched to the reference diffraction of 4HR (ICDD, 034-1558).
The study explored the effect that different concentrations of Eu3+-doping had on the colour properties of the framework, and observed an additional narrow red emission band following doping at three concentrations.
Type IIn supernovae are characterised by additional narrow spectral lines produced in a dense shell of circumstellar material.
These two additional narrow domain transcription factors seem to directly modulate the mode of action of the general regulator Xyr1 [ 17, 18].
The liquid acts as an additional lens, narrowing the beam of light just as a telescope turns what looks to the naked eye like a smudge on the horizon into a crisp image.
Spectroscopic studies of the synthesized copolymers showed that their optical band gaps were governed by the presence of the alkoxy substituents whose electron donating properties led to additional gap narrowing yielding semiconductors with band gaps of below 1.3 eV in the case of the polymers with the diketopyrrolopyrrole A unit.
Each additional filter narrows the result set of candidates.
If the status of any family members is provided in response to the first question, an additional five narrower 'symptom definition' questions are asked.
