1492* +MxҨV {b vi * x =x ɽ +i * r x {ɴ Pi * {]ii|ɨh **1** **w*** ɽMS Eɮh * ʨl +P S ɹh * Mɴ i` +Yx * ɮh ɴ ɽiɺ **w** {֮ iʱɪ xn * ɴ xn VҴxɺv * I =xɳx n * {ʮ i Ev Mx **2** i {ɮn V M * iɪ {ɪ x ɮ M * Eh Vɪ M * {hh iɪS **3** {]i Ph ʮ * iɪ {] ɽ ʽ * i Eɪ iMi Mɮ * iɪ l >x **4** x nx S ɮ * ɴ =iɮɴɪ {ɮ * b l ɮ * iE h ɽx **5**


Oliұ MS +M Oliұ {fS +M +MS +vɪ