The phrase "actual mass" is correct and usable in written English.
It can be used in contexts where you want to specify the true or measured mass of an object, often in scientific or technical discussions.
Example: "The actual mass of the sample was determined to be 5.2 grams after careful measurement."
Alternatives: "true mass" or "measured mass".
Though encouraged and sometimes initiated by the Nazi occupiers, the actual mass murders were the work of 'local hooligans'.
The idea behind small reactors is that they could be built in a factory that would allow for lower costs through serial production, if not actual mass production.
Small ones can be built in factories, in serial production if not actual mass production, and this will lower costs, the theory goes.
Polycythemia may be relative (e.g., after blood plasma loss), transient (as when a large number of red blood cells suddenly enter the circulation from storage), or absolute (i.e., reflecting an increase in actual mass of red cells in the body).
As the curtain-raiser for the open-air Mass at Bellahouston Park, Susan Boyle sang How Great Thou Art and I Dreamed a Dream and Michelle McManus, who won Pop Idol in 2003, sang something written by her cousin Michael, while James MacMillan's setting of the actual Mass could best be described as perfunctory.
The difference, Δm, between the actual mass of the assembled isotope and the masses of the particles gives a measure of the stability of the isotope: the larger and more negative the value of Δm, the greater the stability of the isotope.
The actual mass of a nucleus is always less than the sum of the masses of the free neutrons and protons that constitute it, the difference being the mass equivalent of the energy of formation of the nucleus from its constituents.
Unfortunately, this technique doesn't reveal the planet's actual mass; just a lower limit.
Correspondence rules connecting a postulated mass \(x\) with an actual mass were not articulated by Hermes.
The proposed mass of this compound exactly matched the actual mass in mass spectra.
To obtain accurate fertilizer application manual calibration of actual mass flow must be repeated frequently.
