Կ(lin)W(wng)֪Rc(din)
Yc(din)
(1)挍(sh)ֵطӳF(sh)֮g(lin)ϵܝM(mn)Ñ(h)̎ҪnjF(sh)һ(g)挍(sh)ģ
(2)ĶͲϤӋCÑ(h)QҊ(jin)Ñ(h)ķeOcǔOӋɹP(gun)I
(3)ڸíh(hun)͑Ҫ׃r(sh)ģĺ͔U
(4)P(gun)ϵW(wng)ӴεȸNģDQ
N(li)
1,(li).xijһ(li)F(sh)һM(li).
2,ۼ.xijһ(li)͵ĽMɳɷ.ˌȲ(li)ͺͳɷ֮gZ(y)x.
3..x(li)֮gһNӼ(lin)ϵ.(li)֮gġis subset ofZ(y)x
P(gun)ϵģ͵ă(yu)ֶ
_ه(li)
ڸ(g)P(gun)ϵģʽ֮gĔه(li)M(jn)ИOС̎(lin)ϵ
Քه(li)ՓP(gun)ϵģʽһM(jn)зǷڲֺه(li)fه(li)ֵه(li)_P(gun)ϵģʽքeڵڎʽ
AεõĸNÌ̎Ҫ@ӵđíh(hun)@ЩģʽǷm_ǷҪM(jn)кϲֽ
Կ(lin)W(wng)֪Rc(din)P(gun)£
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