Description: Language-independent identification of a class that is unique within a classification system; Name: class code
Description: language-independent, unambiguous code of a class within a class system; Name: code of class
Description: translation i of a pair of gears or a multiple gear pair is the ratio of the angle speed wa (or the speed na) of the first driving wheel to that of the last driven wheel wb (or nb); Name: Transmission ratio of the transmission