'constant fluctuation' is a correct and usable phrase in written English.
You can use it to describe a situation where there are regular and frequent changes in something. For example, "The stock market experiences constant fluctuation, making it difficult to predict."
Mr. Haimovitz and Mr. Brey obtained separate instruments for their respective Beethoven and Bach journeys because a constant fluctuation in tension can be a strain on a precious old cello.
For example, Yamada (2001) and Yuki and Ishihara (2002) revealed that STS-1 sensor tilting results in a damping constant fluctuation at the 360-s corner and that incomplete insulation between two feedback paths in the STS-1 seismometers due to humidity could make the damping constant higher.
It's a result of the constant fluctuation of content location and urls without proper redirects being implemented.
For me at least, the work articulate the restless human search for certainty in the face of a constant fluctuation between states of hope and fear.
This sacred view of the weekend creates a constant fluctuation between crippling stress and mind-blowing fun, and it's exhausting on both ends.
The 'blue rate' is in constant fluctuation, but in the last year it has consistently been around 35-50 percent higher than the country's official exchange rate.
Mr. Barenboim replicates Furtwängler's most famous interpretive mannerisms, particularly the constant fluctuations of tempo.
His scores are obsessively intricate, with constant fluctuations that center attention on the podium.
Both pieces call on performers to mimic speech on their instruments with extended technique and constant fluctuations of speed and meter.
Today's pricing system of flat rates for retail customers despite constant fluctuations in the wholesale market is rather like setting petrol prices without bothering about the cost of oil, says Fereidoon Sioshansi of Menlo Energy Economics, a consultancy.
Dan Pfeiffer, the White House communications director, said the health care debate reaffirmed one lesson of Mr. Obama's presidential campaign: that it is critical not to get distracted by the constant fluctuations in the news cycle and the instant analysis of pundits.
