???? ??? ?????. ???? ???? ?? ???? ???? ????? ???? ?? ?? ??, ???? ???? ???? ???? ?? ???? ?? ???? ??? ???? ????. (the process of assessing a program or component to find out whether the items of the given enhancement section satisfy the problems imposed In the beginning of that stage) [IEEE STD 1012] ?? ????? ??? ??? ? ????, '????'? ??? ?????, '??'