Description: classifiying a device depending on its usage, operation and fabrication; Name: Device type
Description: Characteristic to differentiate between different products of a product family or special variants; Name: Product type
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