Description: Unique number and letter combination assigned by the manufacturer to identify the device for the order; Name: Manufacturer order code
Description: by manufactures issued unique combination of numbers and letters used to identify the device for ordering; Name: order code of manufacturer
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