The phrase "accumulated mass" is correct and usable in written English.
It can be used in contexts discussing the total amount of matter or substance that has been gathered or built up over time.
Example: "The accumulated mass of debris in the river poses a significant threat to the local ecosystem."
Alternatives: "total mass" or "gathered mass".
Or that an accumulated mass of evidence has documented Russian human rights violations against Chechens on a grand scale.
The latter is accompanied by an almost complete loss of the previously accumulated mass.
A strict relation between accumulated mass of frost, air-side pressure drop and cooling capacity was also observed.
The number of raindrops may increase so rapidly in this manner that after a few minutes the accumulated mass of water can no longer be supported by the upcurrents and falls as a heavy shower.
The resulting configuration has been experimentally characterized using flash radiography for short and long stand-off in order to provide quantified jet characterization including velocity profiles, accumulated length, accumulated mass, jet diameter and v2d profiles.
Passive sampling has become a practical way of sampling persistent organic pollutants over large spatial and remote areas; however, its ease in use is also coupled with some uncertainty in calculating air concentrations from accumulated mass.
These settings resulted in different air- and particle-velocities as well as different accumulated masses in the cavities, which were successfully simulated by the model.
Eventually, the process would lead to accumulated masses that eventually destroy the brain.
The long-lived strain daf-2 e1370) daf-2 e1370rely accumulated masses.
A glacier may also accumulate mass through the refreezing of water that occurs at its base.
Also, in some cases, gas flowing to the center of a disk galaxy could gradually create a "pseudo bulge," as opposed to a primordial bulge, where a black hole could accumulate mass.
