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

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

???? ??????? ?????:
???? ????? ?? ??????? ??????? ????????? ???? ?????? ???????? ??????????, ??? ?????????????, ????????? ??????????, ???? ?????????? ??? ???????? ?????????? ???????? ???????? ??????? ????????? ?????? ?????? ??????? ???. ???? ????????? ?????? ???????????? ??? ??? ???? ?????????? ?????? ?????.