"more fluctuation" is a correct and usable phrase in written English.
You can use it to refer to any kind of increase or decrease in activity, usually over time. For example, "The stock market has seen more fluctuation this year than the past decade."
There has been more fluctuation in Republican party ID over that time.
Now the digital technology is there to do these things quickly, and it allows much more fluctuation of the image.
The other was Ronald Reagan, whose first-term approval ratings exhibited more fluctuation than Mr. Obama's but were about 10 points above the model's expectations, on average.
Only informative PETs longer than 200K bp were used to infer compartment scores: 10M in total from Trac-loop data sets and 76M in total from in situ Hi-C, explaining the more fluctuation on the curve estimated for Trac-looping than for in situ Hi-C.
This can be reflected by the standard deviations of beta weights across cognitive domains, (i.e., GM_SAN:0.088 FA_CC 0.053 fALFF_PFC 0.130 fALFF_pDMN 0.134), indicating that the contributing power of fALFF shows more fluctuation than GM and FA across different cognitive domains.
Compared with that of the conventional drop weight impact test, the impact force-time history curves obtained from the horizontal impact test show more fluctuation at the stabilisation stage, because the existence of gravitational acceleration of drop hammer and larger velocity in drop weight impact test accelerates the repeated process of contact and separation between the hammer and specimen.
Then the graph picked up some more fluctuations.
More fluctuations on the betting market occurred yesterday morning.
Cyclic aeration modes created a sinusoidal pattern of shear stress and generated more fluctuations and were expected to reduce more irreversible fouling.
The amplitude of the galloping cycle is also investigated and the upper velocity values show more fluctuations than the lower ones.
In a speech at the Shanghai conference, central bank vice governor Yi Gang said that investors could expect more fluctuations by the yuan against the dollar as the PBOC tried to put more emphasis on measuring the yuan's value against a basket of currencies.
