?? ???? ??? 4?? ??…?? ?? ?? ‘?’

??1
?? 2020? 9? 25? 12? 23?

???: ?

???: ?

?? ??? ??? ?? ??? ???? ???? 4? ?? ????. 8??(8?28?, 0.11%)? ???? ?? ???? ???? ????. ?? 6·17??? 7·10?? ??? 8·4???? ?? ?? ? ??? 3?? ??? ??? ???? ?? ???? ?? ??? ?? ?? ????? ??? ? ??? ???. ?? ????? ???? ????? ???? ????. ???? ???? ?? 2??? ??. ??? ????? ???? ??? 3? ??? ?? ???? ???? ???????? ??? ? ???? ????.

◇?? ???? 4??? ??? ?? ??…“????? ?? ??”

25? ???114? ??? ?? ??? ???? ???? ??(0.06%) ?? ??? 0.05%? ????. ???? ?? ???? ?? 0.03%, 0.06% ????. ? ?? ??·??? 0.07%, ???? 0.04% ???.

??? Δ??(0.11%) Δ??(0.11%) Δ??(0.08%) Δ??(0.06%) Δ??(0.06%) Δ??(0.06%) Δ??(0.06%) Δ???(0.06%) Δ??(0.06%) ??? ???. 9? ?? ??? ???? ??? ??? ???? ?? ???? ??? ??? ???? ??? ?? ???? ?? ????.

???? Δ??(0.09%) Δ??(0.08%) Δ????(0.06%) Δ??(0.02%) Δ??(0.02%) Δ??(0.02%) ??? ???. ??·??? Δ??(0.16%) Δ???(0.13%) Δ??(0.12%) Δ??(0.12%) Δ??(0.11%) Δ??(0.11%) ??? ???. ?? ??, ?? ? ????? ??? ??? ?? ??? ?? ??? ????.

◇???? ?? ??…??? ?? ??? ??

??? ????? ?? ???? ??? ??? ??? 0.10% ????. ??·??? ???? ?? 0.09%, 0.05% ???. ?? ????? ?? ?? ??? ???? ??? ??, ?? ??? ????? ????. ?????Δ??(0.28%) Δ??(0.24%) Δ??(0.16%) Δ??(0.16%) Δ??(0.13%) ??? ???.

???? Δ??(0.13%) Δ??(0.10%) Δ??(0.07%) Δ??(0.07%) Δ??(0.06%) ??? ???. ??·??? ???? 3???? ?? ??? 5?? ?? ??? ?? ??? ???? ?????. Δ??(0.21%) Δ??(0.18%) Δ???(0.17%) Δ??(0.15%) Δ??(0.13%) Δ??(0.12%) ??? ???.

??? ?????? “?? ??? ??? ??? ???? ?? ????, ??? ???? ?? ????? ???? ???? ??? ??? ?? ??? ??”? “??? ???? ??? ?? ???? ???? ??? ???? ??”? ????. ?? ????? ??? “???? ???? ??? ????? ?? ??? ??? ???? ??? ????? ???? ????? ?? ?? ??? ??”??? ????.

?(??=??1)