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    ?????? ????? ?????? ?? ?????? ??????? ?????? ? PPMA ???????? ???????? ?????? ?? ??????? ??????????? ???????? ?????? PCPP. ????? ???? ????? ?????????? ??????? ????? ??????? ?????? ???? ????? ??????? ??? ??????? ????? ??????? ??????? ?????? ??????? ??? ??? ????? ?????? ???? ???? ????? ?????? ???????.
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    ????? ???????? ?? ????? ??????? ???????? ??????????? ??????? ??? ??????? ?????? ????? ?????? ??????? ?????? ??????? ?????? ??????? (??????? ???????) ?????? ?? ????????. ????? ??? ???? ???? ?????? ?????? ?? ??????? ???????? ??????? ??????? ?????? ????? ???? ?????????.
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    ???? ?????? ?????? ????? ??????? ??????? ????? ???????? ??????? ??????? ??????? ??????. ??????? ?? ????? ??????? ???????? ??????????? ??????? ??????? ?????? ?????? ??? ???????. ????? ??????? ???????? ??????? 38CrMoA1A ?42CrMo ?60CrMoV ?9Cr2Mo ?????? ?? ?????? ??????? ?????????? ????????? ???????? ????? ??????? ??????? ??? HRC58 ~ 62.
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    ?????? ????? ?????? ?? ?????? ??????? ?????? ? PPMA ???????? ???????? ?????? ?? ??????? ??????????? ???????? ?????? PCPP. ????? ???? ????? ?????????? ??????? ????? ??????? ?????? ???? ????? ??????? ??? ??????? ????? ??????? ??????? ?????? ??????? ??? ??? ????? ?????? ???? ???? ????? ?????? ???????.
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