Description: ratio of the number of failures of a given category to a given unit of measure; Name: failure ratio
Description: Number of failures within a population divided by the number of life units used by that population; Name: failure rate
Description: minimum mass of the liquid at design temperature divided by its volume, when stating the density, the unit of density used, together with the temperature, shall be explicitly given, for example kilogram per cubicmeter or gramme per mililiter at t°C (see the note). the standard reference temperature for international trade in petroleum and its products is 15°C (see ISO 5024), but other reference temperatures may be required for legal metrology or other special purposes; Name: minimum density at design temperature