I(yng)Xt,pXмt,BVC(j),D(zhun)t,Ԅ(dng)h(hun)̎a(chn),mO(sh),(ji)ܭh(hun)ʽXҺC(j),Qʽ
l(f) O(sh)
+
r(ji) Ԫ
I(y)a(chn)(yng)XҺC(j)
Ҫa(chn)XtpҠt
ƳmO(sh)
I(y)a(chn)X̎
аl(f)Bm(x)ʽQ
I(y)a(chn)BVC(j)
(yng)һD(zhun)t