konkreetne suurus, mis on määratletud ja mida kokkuleppeliselt kasutatakse teiste sama liiki suuruste võrdlemiseks ning kvantitatiivseks iseloomustamiseks
real scalar quantity, defined and adopted by convention, with which any other quantity of the same kind can be compared to express the ratio of the two quantities as a number
Это интересно
Measurement units are designated by conventionally assigned names and symbols.
