????λ?????? > ?????? > ?????? > ??????Z > ???????
???????
???????????й?????????????
?????????Zh??n Zh?? T??n?? S??n?? C??o
?????????????????????????
??????????????????????????????????????????ɡ?
?????????????????????60??100???????????????2??3???????????????8??18?????С????λ????Σ???0.8??2???????0.5??1.5????????3???????????2??3??????????????????????????????????????ɡ?????2??????????????????С?????4????????????????Σ??????????????????1??5??????????Σ?????????????Σ????????????????4??6?????????8??
?????????????????????????????????????????????????????????????
????ζ???????
?????????Ρ??????????θ????????????
???÷??????????????????1??3???
????????
???????????Σ?????????????????????
??????????????????????????????????
????????*???
