ͨL(fng)ڱͶϢW(wng) x^(q) ȫ ʡͨL(fng)ڱ ͨL(fng)ڱ Ӣ^(q) A^(q) ɽ^(q) m^(q) ^(q) ͨL(fng)ڱͶϢW(wng)P(gun)Ϣ 0 lP(gun)Ϣ ǸδҵҪИ˲ُϢc鿴M