????? ??? ??????? ??????? ?????? ????? ?????? ???? ??? ??????? ??? ??????? ???? ???? ???????? ???????? ???? ?????? ???????? ???????? ??? ????? ??????? ??????? ????? ???? ????? ?? ?????? ???????? ??? ??????? ?????? ???????? ??? ??? ??? ??????? ??? ???? ??????. ?? ????? ????? ??? ??? ???? ???? ????? ??????? ???????? ??? ??? ????? ??? ???? ??????? ???????? ???? ???????. ???? ???? ????? ???????? ??? ????? ?????? ???? ????? ???????? ????? ?? ????? ??????? ???????? ???? ???? ??????? ??????? ???????. ?? ????? ?????? ??? ?????????? ???? ??????? ????? ??????? ???? ???? ????? ?? ???? ????? ??????. ???? ??? ????? ???????? ??????? ????? ???? ??????? ??????? ?????? ??????? ????????. ????? ????? ?????????? ????????? ?? ???? ??????? ??????? ???????? ?????? ??? 45 ?60 ???? ????? ???????? ????? ?????? ???? ????? ????? ??????? ?????? ???????? ??????? ??? 110 ?190 ???? ?????. ??? ????? ????? ??????? ?? ???? ??????? ???? ???? ???? ?????? ??????? ?? ?????? ??????? ?????? ?? ??????? ?????? GB/T 8174-2008.

??????? ?????? ????? ???? ????? ??????? ?? ???? R2/R3/????? ?????/???????/???????? ?????? ????? ????? ?????? ????? ?????? ????? ??????? ??????? ????? ??? ?????? ??????? ?????? ??????? ??????? ?????? ?????? ???. ???? ?????(????? ??????? ??????? λ ≤ 0.030 ???/(?·???? ?????)) ???????? ??????? ????????. ???? ??? ??? ??????? ?????? ???? ?????? ?? ????? ?????: [R2: 7160.04 ??????? ????????]? [R3: 10856.00 ??????? ????????]? [????? ?????: 37391.73 ??????? ????????]? [????? ?????: 26006.76 ??????? ????????]? [???? ????????: 3009.55 ??????? ????????]. ???? ??? ????? ????? ??????? ???????? ??? ?????? ???????? ?? ??????? ????????. ?? ????? ???? ????????? ???????? ?????????? ??? ???? ??? ??????? ?????? ?????? ?????? ??????? (≥ 85%) ???? ????? ??? ????? ???????? ?????? ???? ??????? ??????? ??????????? ??????? ????? ??? ???? ????????? ?????? ??????? ????? ????? ??????? ?? ????? ????? ??????.