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?????? ?????????? ?? ???? ???? ?????????? ??? ?? ?????????? ???? ???? ?????? ??????? ??? ????????? ????????? ?????? ??????? ??? ????.
????? ??? ???? ?? ?? ???? ?????????, ?????-??? ?????? ????????????? ?????? ????? ??? ?? ???????? ???? ??? ????????? ?????? ??? ??????? ????. ????? ????? ???? ??? ????? ?????????? ??? ??? ????? ??? ????? ???? ??? ????? ??? ??????? ????? ??? ?????, ???????? ???? ??? ???????? ?????? ??? ?????????? ?? ?? ?? ???????? ??? ??? ??????? ???? ??? ????. ???? ??? ?????? ????? ???????, ????? ??? ?????? ????????? ????????????? ?????? ????? ???; Sn: 3.01%, W: 5.5%, ??? ???????? ??? 30~40% ??? ????. ?? ??? ????? ?????? ????????? ????????????, ???????? ????????? ????????? ???????? ??????? ????????????? ??? ?????????? ??????? ????, ?????, ???, ??????, ?????, ????, ????, ????????, ???? ??????? ???????? ???????? ?????????????????? ????????? ???? ???? ??? ????, ????????? ???????? ???????? ???.
??????? ??? ?? ???????? ???? ??????? ?????? ????? ???, ?? 4-0.02 ??????? ????????? ?????????? ?????? ?????? ?????????? ???? ???, ??? ?? ???, ?????????, ????????, ???????, ??????? ????, ??? ????, ??????-??????? ????, ?????? ???, ????????? ??? ?????? ???? ??? ???-????? ????, ??????? ???? ??? ??????? ????? ?????????? ???????? ??????? ??????? ???.
SD ?????? ????????????? ???????????? ?????? ???????? ???????? ???? ???????? ???????? ????-??? ??????????? ??????? ????????? ????. ??????????? ?????? ???????? ????????? ???????????? ???? ???????? ?????? ?? ????????????? ?? ??????? ????, ??? ???????? ??????? ??????? ???? ???? ???? ?????? ?????? ????. ????? ????????????? ???????, ????? ???? ?? ?????????? ??????????? ????? ?????, ?? ?????? ???????? ????? ??????. ?? ????, ????? ???? ??????????? ??????????? ????-???????? ????????? ???????? ???? ???? ??? ???, ??? ????-?????? ???? ???????????????? ?????? ??????? ?????? ????????? ????? ????, ???? ????? ???????? ?????? ???????? ?????? ????? ????.
?? ????? ???? ??? ?? ?? ????????????? ???????????? ???? ??????? ?????? ????? ????. ?? 100 ??????? ????? ????????>95% ????????????? ?? ??????? ??? ????.
????? ????? ????? ???, ??? ????? ???????? ????? ????, ??????? ??????, ???????? ?????? ????? ???????? ?????? ???? ????????? ?????? ????????? ???? ????? ??? ????. ????? ???? ??????? ???? ???????? ?????? ????.