English to Italian Tech/Engineering Engineering (general)

Come tradurreste il passaggio "a restriction for the liquid to enter"?

"The invention requires the presence of a reflective surface at the bottom of the tube. This serves two purposes. One is providing a means to detect the bottom of the pipe. The other purpose however, in synergistic effect with the at least one hole, is to provide a restriction for the liquid to enter, thereby reducing the movement of the liquid surface. This allows for a better detection of the interface between the supercritical fluid and the liquid phase."



Grazie!