MHB ?? ????-????????? Pb-Ca-Sn-Al ????? ?????????? ???????? ????????, ????? ???????, ????????, ? ??????? ???? ??????????? ???? ?????? ???????, ????, ? ?????????????? ???? ????????

??? ?, ???? ??, ??????? ????? ????? ??, ??????? (????? "????? ?????" ???? ???????) ?? ???????? ????? ??????? ?????? ???? ??, ????????? ?????????? ??? ????? ????? ???????

??????? ?? ???? ?? ????, ??????? ?????? ??? ?? ???????? ?????? ??? ?????? ?????? ??? ???? ??????? ? ??.? E??-??, ? ???? ?????? ???????? ????????? ? ?????????? ???? ? ??????? ???? ??????? ????? ??????? ?????????? ????????