The phrase "a usual supplement of" is correct and usable in written English.
It can be used when referring to a common or typical addition to something, often in the context of food, nutrition, or other enhancements.
Example: "Vitamin D is a usual supplement of a balanced diet, especially in regions with limited sunlight."
Alternatives: "a common addition of" or "a typical enhancement of".
Additionally, the usual supplement of ergosterol to anaerobically grown S. cerevisiae hampers a direct comparison with our data, since we did not add ergosterol in any oxygen condition.
This short paper solves the problem when the domain is a usual bounded domain, gives a complete supplement of the paper [13].
A cover of Alterlinus, a supplement of linus, from 1974.
A trial of a nutritional supplement of pomegranate seed, green tea, broccoli, and turmeric; a trial comparing flaxseed, low-fat diet, flaxseed, and low-fat diet versus usual diet; and a trial supplementing soy, lycopene, selenium, and coenzyme Q10, all demonstrated beneficial effects.
This was due to Dacre giving up his usual annual salary supplement of at least £500,000 to start participating in an annual long-term incentive plan (LTIP) designed to make his remuneration "more directly linked to the overall success of the business".
With a supplement of (NH4 2SO4, K. marxianus DSM 5422 grew at first with μ = 0.57 h−1 as usual in diluted DW medium [12,14], but then, the growth slowed down due to medium acidification (Figure 1).
Schools of the 21st Century, a supplement of Architectural Record.
Thus, supplementing a usual diet with mixed nuts for 6 weeks had favorable effects on several lipid parameters in Korean women with metabolic syndrome.
To compare the effects of a 12-week nutritional intervention, in which an innovative protein-and-energy-enriched brioche, an oral nutritional supplement or a usual breakfast were eaten, on food intake and nutritional status in nursing home residents.
