??? -4~6?·? 8~16?…?? ? ??? 10~15?
???·????·??·?? ???? ‘??’
???? 25?? ??? ??? ?? ??? ???? ?? ?? ??? ?????. ??? ???? ????, ???, ???? ????? ‘??’ ??? ????.
???? ?? ?? ?????? ????? ???? ???? ??? ??? ???? ?????? ??? 26? ?? 6? ??? ??? ?? ???? ???? ?? ???? ????.
?? ?? ????? -4~6?, ? ????? 8~16??. ??? ???? 2~4? ?? ?? ?????.
?? ??? ?? ????? Δ?? 2? Δ?? 1? Δ?? -3? Δ?? 4? Δ?? 0? Δ?? 2? Δ?? 7? Δ?? 1? Δ?? 1? Δ?? 6?, ? ????? Δ?? 10? Δ?? 8? Δ?? 11? Δ?? 10? Δ?? 12? Δ?? 15? Δ?? 16? Δ?? 12? Δ?? 14? Δ?? 12?? ????.
??? ??? ???, ????, ???, ???? ?? ??? ‘??’?? ?? ???. ? ?? ??? ‘??’?? ????. ???????? “?????? ?? ??? ????? ???? ??? ?? ??? ????”? ????.
??? ??? ?? ????? 0.5m, ?? ????? 0.5~1m, ?? ????? 0.5~1.5m, ??? ?? ????? ?? 1.5m, ?? ????? ?? 2.5m? ???.
??? ???? “??? ?? ????? ??? ?????. ??? ??? ?? ?? ???? 10~15? ??? ?? ??? ????? ???? ??”? ????.
(??=??1)
?? 0