Description: probability for an item to be in a state to perform as required at a given instant; Name: immediate Availability
Description: Probability that an item is in a state to perform as required at a given instant, under given conditions, assuming that the necessary external resources are provided ; Name: Instantaneous availability
Description: comprising a fluid together with substances in solid or gaseous states, whether due to deliberate addition or a change of state caused by a change in conditions; Name: multi-phase