The phrase "a precise proportion of" is correct and usable in written English.
It can be used when discussing specific measurements or ratios in various contexts, such as science, cooking, or statistics.
Example: "To achieve the desired flavor, you need to add a precise proportion of salt to the mixture."
Alternatives: "an exact ratio of" or "a specific fraction of".
For these reasons, we combined HUMARA to detect X-chromosome inactivation pattern and AS-PCR to detect the BRAF mutation and provide a more precise proportion of multifocal PTCs with different clonal origins.
Due to the similar textures and processing technologies of different meat products, it is difficult for consumers to identify their authenticity, not to mention the precise proportion of meats within a given product.
Addressing this, Reid says it is impossible that "a triangle should really exist which has no precise proportion of sides and angles" and, generally, it is "impossible that any being should exist which is not an individual being" (EIP 5.6, 396).
In our study total input cell numbers were counted by trypan blue exclusion on a haemocytometer, and so we were not able to determine the precise proportion of mononuclear cells that were CD8+ T cells in either compartment.
In fact, this idea gets to the heart of why debating the precise proportion of scientists who endorse the mainstream position on climate change is ultimately a distraction.
The precise proportion of saturated and unsaturated fat was unspecified, Ms. Heimowitz said, because "trying to tell consumers to do math is futile".
But if anyone wants the accurate figure for the precise proportion of Scottish voters who did bother on 3 May, they'd be disappointed.
Though the professors didn't measure the precise proportion of stocks that showed the pattern, they do know it is quite widespread.
The precise proportion of these cold medicines that are purchased to produce methamphetamine is not known, but it is clearly very large.
It is often difficult to calculate the precise proportion of fossil fuel investments in complex funds, but about $400bn of the $5.2tn total is likely to be in coal, oil and gas.
