heW(wng)Zo(h)|eôӋ(j)
ߣ_l(f)o(h)̡Դԭ(chung)rg2018-12-5 10:59:01g[233901
(ni)ժҪheW(wng)Zo(h)|eôӋ(j)?1.heW(wng)e(һһθ)eW(wng)e=2+2L+2L+(L-1)2.hZo(h)|e(һһ壬p)we=Le...
heW(wng)Zo(h)|eôӋ(j)?

1.heW(wng)e(һһθ)
eW(wng)e=2+2L+2L+(L-1)
2.hZo(h)|e(һһ壬p)
we=L
e=(L+2ߡL)(+2)
Zo(h)|e=we+e=L+(L+2ߡL)(+2)