The phrase "slow variation" is correct and commonly used in written English.
Example: The scientists observed a slow variation in climate patterns over the past decade.
And what we've retained is the broader, slow variation.
This slow variation closely follows statistical measures of the distribution of magnetic and photospheric features on the solar surface.
Therefore, if we perform a change of basis before we represent the BRDF we should see slow variation along one axis, potentially leading to better compression.
Lupu found poetry in all of them, even in the brusqueness of Beethoven's eight-bar chaconne-like theme, and reserved a special moment of lingering wonder for the last slow variation in Mozart's scheme.
In the second part, a slow variation of input wind speed was superimposed on the constant wind speed signal and the dynamic response of the system was analyzed.
We apply this method to process systems which suffer from slow variation of system parameters due, for example, to aging or degradation.
So it was in the slow variations that MacGregor was at her most eloquent.
The sequence of three slow variations near the end featured playing of cloud-light softness.
This prime integral has permitted the identification of solutions characterised by slow variations of eccentricity.
And in particular, what's done is to smooth it, or average over some time period, to emphasize the slow variations and de-emphasize the rapid variations.
Instead he tried to capture the music's quicksilver shifts, downright wild inventiveness, audacious humor and, in the slow variations, slightly uneasy serenity.
