Russian
физическая величина Portuguese
grandeza física Spanish
magnitudes físicas Catalan
magnitud física 
Quantitative characterization of an aspect of a physical entity, phenomenon, event, process, transformation, relation, system, or substance.
1
The universe currently contains a large amount of matter that is characterized by the physical quantity we define as mass.
2
I don't yet know all the physical quantities involved, but the sophistication of the mathematics is just-just quietly superb!
3
But with these adjustments, imperceptible in ordinary use, the laws deal with fundamental physical quantities which we know very well and wish to correlate.