Description: operating time of the product from the commencement of its usage to the first failure ; Name: operating time until failure
Description: Operating time accumulated from the first use, or from restoration, until failure ; Name: Operating time to failure
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