????λ?????? > ?????? > ??????? > ???????D > ???θ??????
???θ??????
???θ??????--????????
????????????3???????3????????3????????3??????????2????????2???????2???????2??????2????????2??????1????????1??????1????????1????????1???????????????????1???????1???????1???????1???????1????????1????????1???????1???????1???????1?????????1???????1????????6??????????5?????f5???????1????????50???????????????????е???3??????
???????????????????裬????????
?????????Ρ???????????????????????????????????????????????????????????岻?????
???÷??????????20?裬???????????30?衣????????
????????????????????塷????????θ???????????θ?г??????????????????????????????衢??С????????衢???????????????·?Ω?????f????????????θ?????????????Σ????к?????????????????????????????????????????????????????????????????????????????????????????в???????硢????????????????????????????????????????Σ????????????????????????????????????f???????????????з?????????????????????????????????????Э?òΡ??????????????????????????и???????Э?????????????????????????????????????????????????????顣?Ρ???ù???????????????????????????????f????????òΡ??????????й????????????????к???????????????????????????????????????????????Σ?????? (????)???????????????и??????? (????)???????????????θ?г????????????f?????????裬????????????????飬?????????????????????????????档
??????????????
