The phrase "a sudden expansion" is correct and usable in written English.
It can be used to describe an unexpected increase in size, scope, or intensity in various contexts, such as business, science, or personal experiences.
Example: "The sudden expansion of the company caught everyone by surprise, leading to a rapid increase in staff and resources."
Alternatives: "an abrupt increase" or "a rapid growth".
This is associated with a sudden expansion of the slightly heated tissue.
On the contrary, Ms. Li felt a sudden expansion of space when her husband was lifted out, and now she could breathe more easily.
Television precipitated a crisis of confidence in Hollywood but, as in the post-revolutionary 20's, Soviet film thrived on a sudden expansion of opportunity.
And, it is, in a way, a sudden expansion of perception that Mary Sweeney gave the world by smashing windows across the little towns of 19th-century Wisconsin.
In a Wilson cloud chamber, supersaturation is caused by the cooling induced by a sudden expansion of the saturated vapour by the motion of a piston or an elastic membrane, a process that must be repeated with each use.
Last year two biologists noted from study of the malarial parasite that certain of its genes were very uniform in their DNA code, suggesting that the parasite's population had undergone a sudden expansion, maybe as recently as 5,000 years ago.
The convective ignition of solid fuel (PMMA) in a sudden-expansion combustor (Reh = 6200, u0 = 22 m/s, [O2] ∼ 11.7%, T0 = 810 °C) is investigated from the perspective of flame vortex interactions.
Sample sizes and coalescent simulation results for Fu's FS, R2, Harpending's raggedness index (r), and mutation time parameter τ calculated from a sudden-expansion demographic model.
Moreover, NW samples displayed a history of a prolonged population decline followed by a recent sudden expansion based on Lfy variations.
The reaction starts downstream a symmetric sudden expansion and is at the origin of different instability patterns depending on oxygen concentration and Reynolds number.
The effect of swirl on the flow characteristics of an axisymmetric sudden expansion chamber with an expansion ratio of 2.5 was examined experimentally.
