߶(sh)W(xu)γ3֪R(sh)c(din)
(do)Z(y)r(sh)gǂ(g)(sh)һM(fi)24Сr(sh)r(sh)СP(gun)Д(sh)W(xu)ϣ(du),gӭxHP(gun)֪R(sh)Ո(qng)P(gun)עCNFLAW(xu)(x)W(wng)!
ƽDֱֻAҎ(gu)@^ֱָ](mi)п̶ֻܮ(hu)ֱijֱcAҎ(gu)(dng)ȻSN֮DЩD߅߅ξ(li)Щ(wn)}(li)ܺ(jin)(li)sy@Щ(wn)}֮ľ^.(wn)}
(wn)} :
1.A鷽-һʹeһ֪A;
2.ȷ;
3.-һwʹweһ֪wĶ
AcζdzҊ(jin)ĎΈDΣһ(g)κ֪Ae?֪Aİ돽1teπ(1)2=πԻA鷽Ć(wn)}ȥһeπҲóҎ(gu)L(zhng)Ȟπ1/2ľ(πľ)
(wn)}ĵڶ(g)ȷһ(g)ǵĆ(wn)}(du)ijЩ90180ȷֲyǷнǶȷ?60ȷքt20ĽN18߅μ߅Ҳ(li)(עA(ni)һʮ߅ÿһ߅(du)ĈAܽǞ360/18=20)䌍(sh)ȷֽǵĆ(wn)}߅@һ(wn)}(li)
(g)(wn)}DZ(Ԫǰ276~Ԫǰ195)(jng)ӛһ(g)Ԓᵽf(shu)һ(g)֪ߵõI회εļweӱÿ߅L(zhng)ӱ҂֪e(cu)`?yn)weѽ(jng)׃ԭ(li)8
@Щ(wn)}_(sh)W(xu)һǧ궼(sh)H@(wn)}ֱ߈AҎ(gu)(jng)EɽQ
1637ѿ(chung)SΆ(wn)}D(zhun)(sh)(wn)}(li)о1837ߠ(Wantzel)oȷһǼóҎ(gu)DC1882ֵ(Linderman)ҲCπijԽ(πκ(sh)ϵ(sh)ʽĸ)A鷽IJҲԴ_
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