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????? ??????? ??? ??? ??????? ?? 3 / α - ?? 2 ? 3 / ? ??? ?????? ??? ?????? ????? ?? ???? 3: α - ????? ???????? 3: ? = 75: 24: 1? ??? ???? ????? ??? ????? ???? ????? ????? ?? ??? ??????? 68.3 ?? ?????? 71.2 ?? ??????.???? ????? ????? ??? ??? ????? ?? ??? ??????? ?????????? ???????.

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