1) элемент
2) простейшая единица выборки
- element of cost
- constant element
- diagonal element
- external element
- foreign element
- game element
- intermittent element
- internal element
- irregular element
- machine element
- manual element
- nondiagonal element
- nonnegative element
- null element
- off-diagonal element
- operation element
- pivot element
- random element
- regular element
- restricted element
- seasonal element
- stochastic element
- unrestricted element
- variable element