"changing abruptly" is correct and usable in written English.
You can use it when you want to describe a sudden change. For example, "The wind suddenly shifted, changing abruptly from a mild breeze to a howling gale."
That, too, is changing abruptly.
It would be nice if the photos could crossfade (dissolve) gently from one to the next, instead of changing abruptly.
In addition, the time step restriction (tsr) technique is designed to limit the increase in time steps, and thus prevent the membrane potential from changing abruptly.
The scheme becomes specifically useful when extended to linear plants whose parameters are piecewise constants while changing abruptly to new constant parameterisations or in the case when the parameters are slowly time-varying rather than constant.
Craigslist, a website that hosts job- and help-wanted ads, expanded rapidly across the states in the USA over a very short period of time, thereby changing abruptly the market structure faced by competing employment websites.
Figure 6 shows that at a low number of elements stress is changing abruptly whereas at a higher number of elements reaction became stable, but so much higher number of elements will increase the complexicity and also the analysis time of the specimen.
I.B.M. must steadily evolve, Ms. Rometty said, but she does not anticipate changing course abruptly.
But it turns out that speed is not the secret to their prodigious hunting skills: a novel study of how cheetahs chase prey in the wild shows that it is their agility — their skill at leaping sideways, changing directions abruptly and slowing down quickly — that gives those antelope such bad odds.
Is your industry or company changing quickly, abruptly, frequently?
Venture is notoriously cyclical, and one could see sentiment changing as abruptly as it turned a few months ago.
Its short, soft, and fine fur is bright ochraceous brown to pale tawny on the upperparts, changing moderately abruptly into the generally gray underparts.
