??????
??·

???????й???α??????????????1??????￡??????·??????????Уε?????????????????????????????????λ???????

?????????壬y屾????????Ч??У???????????????????y??????·?????????йΡ?á

??????Σ???·?????о????????á??????????·??У?????????????????????1???衢β???????е????е?Ч??Щ???Щ????Щ飺

????ū塰???????y?

????Сū???????y????????????????????????

?ū塰??????

????????????????????嵳?????????????

??????????y?????????y?μ?á￡?Щy??г?????????????????????????????????????κ???

??????????????????￡?θ??·??????棬?????￡????Ч?Ч?????????????????????????????????磬???

????

????????????????????y?е????Ρ???????????y???????????????·?????????????У????????????????????????????????????????????????κ??ι????????о???д???????????????��??????????ζ???????С?????????У???????????????????У??��????

???????

?????????????Щy??е?????????鵽??????y嵽????·?y弰?????壺??????Ρ??????

?y弰????λ??Σ顢顢鶼??仯Э???μЧ?Ч棬ν???????±??Щ?y弰???????λ

????????????в?????????????????μ???·???У??????????????????????????????????????

??????????λ?????????????yΡ????????????y岻????λ??????????硢ù?磬??????У????

?y弰??ζλ??μ?????????????????????飬????? 顣????????????????????????飬??????

??·?????嵳??ν??????????????Σ????????Σ???????Σ????Σ?????Σ?й??Ρ?ε??y弰???

й????????????????????й?йΡйΡ?г?????????????йΡ?????????o?縺???????

????????????y弰????á????????λ????а??????м?ι?????????·????

?????????????

ò???y壬????·?á?У??????????档????·?????硱У??????仯?y????????棬????????

?????ì???ì?ì??????????????????????????·??????????????????仯??????????У????????????淽?????????档????Σ??й???

?????仯

????仯??Ρá???仯??y????г?У?Щy???λ???Чλ?Ч棬??????Σ??

y??仯y?????y???????. ?y?????????￡?Щδó???y壬??y????е?????????????????μ??δ?

?仯????????仯?棬????Ч???????漰??棬?????????y??????????Щy壬??С????2???Щ仯???????????

????

??????Ψ??????

??á????仯??yЧ?Ч???г??λ????????磬??y??￡?yκ??????ì????????????????????????????????·?Чλ???Ч档??????λ??????????

???????????1??????￡????????y??????????棬?Щ?y???λ??壬??????????λ????

??????Щ??????е????????徢е??縡???????е????Υ??????????п???棬?棬???????

??ò????汨???Щ??????????????汨???????????????????Сθ??????

?С?????yε?

?С?С??к??·?о?оy?????????оó??????????·???óЧ???ν?С

??????·??У???е?涨???y????Щ????????Χ?y????????????????????????δ￡??????

??θУ??

y????漰???????α???????????????кθС??Σ?Ρ

???·?У?????????????θ??????Σ??????????????Σ????衱??????????????????ι????Σ??￡ε??y??????

?????????α???????й?????????о??й??????λ????????á?????γ?Ч??yε?е???????й?????Ч????????й??y???????

?????

y??·??С?yξ??桢?桢?λá??y壬?y壬??????棬???????y???Чyy????y???????y?顢??Ρ

????????????yy???????????Ч??????е?????????绥?y????壬????y壬úy壬?y壬?y塱????????????衢????????塱???yγ??????????γ???????????????????????????

????????y???ν???????γ??

ν??????У???????????????????????????????????Ч??????棬г??????????????????????????y?裬??y?????????塣

?缼???????н???????д????????????????????Σy弰???y?????????????е??????м壬??磬???á????Ч

????

??????????????·??y????????y廥??????飬????????????????е???????????????????????磬С?????????????????????????й??????

??????λ??С?·??á??λ??С???·???????????

ν??????

??????????????????У??????????顱???????????????Χ??????????????????????1????д??????

ν???

????????????á???о??????????????????????????????????磬?У????????λ????????ɡ???鷢???????

ν??γ???

???????????е?????????·????顢????мЧ?????????????????н???н????齨????????Щ??????Ч?

??????????????????????????·????У??????????硢?硱?y???磬??????γ?Ч??????е?????????

???????顱???Ч?У????в?????????Σ????ж??????????????о??г?Ч?′?￡Ч?????????￡????????????????? ?г? ???汨?????г??мйyΣ ￡ ? ?????Сο??·????岻??????? ￡ ?????????????ü??·??? ￡ ??????????

??????????y????y黷У?????б?б?б??????????ν?????Ч?Ρ???????y?????????????????????·?й????

?λ??