߿һNʽߵI(y)ԺУеI(y)W(xu)УI(y)С3+I(y)nCԇСČW(xu)v;ɣ
1I(y)2
l
1I(y)2ͬȌW(xu)ȡÇҳJ(rn)W(xu)v늴ҹԌW(xu)
2ҪI(y)22_cW(xu)ƮI(y)ͬȌW(xu)
2
Ѓɴͣ
һȫͨУy(tng)Ќxή(dng)ʡȫͨУy(tng)W(xu)ČƑ(yng)îI(y)
ڶdz˽ķN;Կ˸߿I(y)࣬ڣh(yun)̽W(wng)j(lu)VҕW(xu)_Ž
3W(xu)
UչY
P(gun)Կ
lA͇Լ۰_ͬSԄegNW(xu)vwrסصɸ(j)˵ČHrW(xu)õԭtxI(y)o(j)طܸ졢eOW(xu)(x)ĄڸڽˆT(jng)P(gun)T(zhn)ҲՈ
Կ.횾ЇҳJ(rn)ČƌW(xu)vУԿƌW(xu)vɿƌW(xu)vh(yun)̽ČƌW(xu)vkW(xu)Уl(f)ChУCl(f)ĮI(y)CߵԺУٵĶW(xu)Ժl(f)Cоn̰அ(Y(ji))I(y)CԈԿ
W(xu)v;P(gun)£
1.ˌW(xu)v;
2.ƌW(xu)v;