Description: characteristic of a structure to resist gradual degradation of its serviceability in a given environment for the design service life; Name: durability
Description: Ability of an item to perform a required function under given conditions of use and maintenance, until the end of useful life ; Name: Durability
Description: difference between the total energy height on the outlet side of the pump aggregate and the total energy height of the intake side of the pump aggregate ruling at operating point; Name: nominal feed height