bubble under

bubble under

vb (intr, adverb)
1. to remain just beneath a particular level
2. to continue in the background or under the surface
References in periodicals archive ?
The width of the computation domain is usually 3-5 the bubble diameter, which has been proved to have little disturbance from the boundary on the shape and velocity of the bubble under the conditions studied in this work.
13 was associated with the disappearance of the smaller surrounding bubbles, so that the bubble under consideration remained eventually relatively isolated.