The phrase "a clear decline of" is correct and usable in written English.
It can be used when discussing a noticeable decrease or reduction in a particular area, such as performance, quality, or quantity.
Example: "The report indicated a clear decline of customer satisfaction over the past year."
Alternatives: "a significant drop in" or "a noticeable decrease in".
On the other hand, a clear decline of the BeO− beam with tens of micrograms of 9Be carrier suggests that the combination of ten milligrams of sediments and a few hundred micrograms of the 9Be carrier is more convenient at this stage.
It's also a clear decline of 7% on the same quarter a year ago.
Finally, both [s] and show a clear decline of acoustic noise energy again above about 17,000 Hz.
Postsurgical examination revealed a clear decline of basal serum calcitonin levels in four patients (between −41% and −100%).
While the peak was estimated in 2006, stratified analyses showed similar results in each sub-group except for injecting drug users for whom there was a clear decline of the estimated recent infections in the period from 2004-2008.
Even though the dose-response relation of time since smoking cessation with cardiovascular mortality seems somewhat weaker in those aged 70 and older than in those aged 60 to 69, we still observed a clear decline of the risk with time since smoking cessation even in the oldest age group.
Although intrachromosomal duplicates dominate in frequency within each of the three age-cohorts, a clear decline in the frequency of intrachromosomal duplicates (and increase in the frequency of interchromosomal duplicates) is apparent as a function of increasing synonymous divergence: 100 (39/39), 88 (65/74), and 66%% (39/59) from evolutionarily younger to older age-cohorts (Fig. 2).
What is more remarkable, perhaps, is that even in the Twitter age, despite a clear decline in the numbers of speakers and the size of the crowds they address, Speakers' Corner endures and is still a world unto itself.
Between 2004 and 2010 there was a clear decline in the proportion of the public who rated standards of conduct as either 'quite high' or 'very high'.
The Perón years (1943/1946 1955) coincide with a clear decline in the share of the top percentile, which moved down to around 15% in 1953.
The only other species that experienced a clear decline in the number of trees through harvesting was L. philippiana, but the strong loss of E. cordifolia still led to a rise in its IV.
