Description: Maintainability of an object, determined by engineering design under expected maintenance conditions and logistical support; Name: Inherent maintainability
Description: maintainability of an item determined by the design under expected conditions of maintenance and logistic support; Name: intrinsic maintainability
Description: variable quantity, which is not influenced by the control but is introduced into the control system from outside with the aim of making the final controlled variable follow it in a given relationship; Name: command variable