The phrase "abrupt step" is correct and usable in written English.
It can be used to describe a sudden or unexpected action or change in behavior.
Example: "The manager took an abrupt step in changing the project direction without consulting the team first."
Alternatives: "sudden move" or "unexpected action".
But in the modern era of political money, where the race for cash has effectively become a campaign unto itself, Mr. Gupta's entwinements with the Democrats, and his abrupt step back, illustrate the pitfalls of such relationships, both for the candidates and for the wealthy contributors who hunger for the access and the attention their largess can bring.
A headcut is an abrupt step in the channel profile, some centimetres to some metres high; it may originate merely as a bare or trampled patch in a vegetated channel bed but will increase in height (like some very large waterfalls) as it works upstream.
They were abrupt, step and digital alloy graded type.
Furthermore, an abrupt step, from high to low photosynthetic capacity, is predicted in the upper third of the crown.
In this study, based on experimental evidence, the mechanical energy losses (ΔH) along two hydraulic inclined (angle φ, 0° ≤ ϕ ≤ 8°) jumps (d1, dm), namely the jump over a thin wall (w) and the jump over an abrupt step (w), are examined, compared and discussed, in the forms of ΔH/d1 and ΔH/H1, for a common field of w/d1 and angles φ.
The phase of the PIA response shows an almost rectangular shape, where the abrupt step between 180° and 0° indicates the transition between photoinduced bleaching and photoinduced absorbance.
In contrast, Nisbet et al. [26] suggest that these increases originate in the Southern hemisphere and Northern and Southern tropics, and are more likely due to wetland responses to meteorological conditions than agriculture, because of the abrupt step-change after 2006.
In general, it is found from Fig. 11(a) that there is an abrupt stepping over the line at Ā i = 0.
In this way, abrupt step-wise transitions between fluorescence levels were observed during the falling phase of puffs.
Monkeys typically responded to abrupt steps of target direction with a biphasic steering movement, exhibiting modest but transient overshoot.
We measured eye velocity during abrupt steps of interaural translation; Nod/Uv lesions reduced the response to sustained translation but had much less effect on initial eye acceleration.
