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: Determined proportion of pump available power input, Pa, which is delivered as pump power output, Pu, after satisfying the losses resulting from friction due to the relative motion of internal surfaces and internal leakage ; Name: Hydraulic efficiency