۱ϩˮ̎еđҪЩ?
f۱ϩa(chn)ƷһNˮ̎ˎԓǛ]ʲôhԵԒ}@ܸȫđڲͬđֱΪQʹһN߷ӻˮԱ^ãϻl(f)]NЧҲˣʯ_ˮ̎ӡȾ켈xVԼϴúȸиֻБfǡîa(chn)Ʒһc䏈
҂ҪՄˮ̎еđҪЩ棬䌍ڿYѲyl(f)F(xin)ˮIҪԭˮ̎ˮ̎I(y)ˮ̎
҂քeһЩҪĽB:
1ԭˮ̎۱ϩc̿ʹˮБҸwۺͳ;
2ˮPAMa(chn)ƷһNܺõֿʣÓˮˎ
3.ڹI(y)ˮڶNoCa(chn)Ʒcϫ@øõăЧЧȥ
Uˮеs|ӡ
ˮ̎Iđ߀]ķNa(chn)Ʒ۱ϩđùЧʹԓa(chn)ƷMNI(y)ǻИI(y)ˮеĹwijMһ̎գʹˮh(hun)ȾƉ