The phrase "a clear drop" is correct and usable in written English.
It can be used to describe a noticeable decrease or decline in something, such as performance, temperature, or quantity.
Example: "After the new policy was implemented, there was a clear drop in employee productivity."
Alternatives: "a significant decrease" or "a noticeable decline."
The increase in tuition fees to a maximum of £9,000 a year has led to a "clear drop" in the number of English students applying for university places this autumn, an independent analysis of the impact of the coalition's controversial reform has found.
Net losses in Q3 totaled $6.1 million, a clear drop from net earnings of $52 million a year ago.
Jason Finger, president of SeamlessWeb, told The Times he saw a clear drop in business this past week.
Jason Finger, president of the food delivery company SeamlessWeb, said he saw a clear drop in business this past week.
While certain types of civilian complaints were reduced and quality of life improved during Roosevelt's tenure, there is no evidence of a clear drop in crime.
There's a clear drop in application numbers from English students when compared to their counterparts in Scotland, Wales and Northern Ireland.
In Boston, scientists measuring the city's greenhouse gas emissions have found what they call a "weekend effect," a clear drop-off in the amount of carbon dioxide entering the city's atmosphere on Saturdays and Sundays.
Measles immunization and skilled birth attendants were dichotomized as 90% or more and under 90% based on the scatter plot indicating a clear drop-off after 90%.
McDonald's forecast for a decline in this month's global sales at restaurants open more than a year suggests a "pretty clear drop-off between December and January," a Morningstar analyst, R. J. Hottovy, said.
Although it is similarly difficult to establish how much of the decline postfortification in the United States and Canada is due to a pre-existing reduction, the clear drop in NTD rates in both countries was matched by an increase in average red blood cell folate concentrations in the early years postfortification (CDC, 2007), supportive of a causal link.
Potential line scans, acquired along the red lines overlaid on the potential maps for all three configurations, show a clear monotonic drop of the voltage between the contacts, revealing the absence of an additional voltage drop (resistance) due to the presence of a grain boundary.
