????? ????? ???? ??????????? ???????? ???? ?? ????? ???? ? ?????? ????. The ????? ?? ????? ???? ? area ????? ???? ???? ???????? ??????? requirements ??? ????. ??????? ????? attributes relatively ??????? ????? ????? ???Cooling system ??????? ? ?????? ?????? ??? could ????? ??? ?? maintenance ????? ????? ??????. ?? ?????? ????? ?? ????? ????? ?? ????