һľʺİY
Իľl(f)ʺr۲λܓp~ʧˮήή仨 ľʺA(y)
ʩʡ(j)ľķNͲͬڌʷݵIJͬҪmrmʩѭ"ʩ"ԭt軨ʩʝȲ^ߣ һ0.1%ҞaƵҺϡ5-10ʩмɌҺʵ뻨ˮ ʩʡԻľʩʕrľϵcֱӽ|ҪڷϼһȻԣl(f)ʺľʺēȷ
1.ˮ ⣺l(f)F(xin)Իľl(f)ʺ(yng)r cˮMеķȣֲʧˮëˮ裬(yng)ܺ ֲmaժ~Ƭpv~懊ˮ
2.ϴQ裺ľܰl(f)ʺұ^ؕrôˮϴϵȻQQժ~Ƭꎛĵ ڸϵˮδ֏(f)֮ǰ(yng)rM~懊ˮ
һƪ ɽ軨~Ƭl(f)Sӷֹ