Description: Number of failures of an object in a given scan divided by the scan; Name: average failure rate
Description: Number of failures within a population divided by the number of life units used by that population; Name: failure rate
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