·µ»Ø

ÉÙÄê´ó½«¾ü

Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
µÚÁù°ÙÈýÊ®ËÄÕ ËÄ´ó°ï»á(1/2)
   ´æÊéÇ© Êé¼Ü¹ÜÀí ·µ»ØÄ¿Â¼
    )¹î¼Æ¶à¶Ë£¬ÓÐЩʱºò·´¶ø±È°ë·ÖÂ¥ÕâÑùµÄÃÅÅɸüÄѶԸ¶¡£¡±

    ¡°Ô­À´Èç´Ë£¬×¿³ÇÖÐÖ»Óаë·ÖÂ¥ºÍÉßÌÃô£¿¡±

    µÔÁÎÓïÒ¡ÁËÒ¡Í·£¬µÀ£º¡°³ýÁ˰ë·ÖÂ¥ºÍÉßÌÃÍ⣬»¹ÓÐÁ½¸ö½­ºþÊÆÁ¦¡£

    Ò»¸öÊdzÇÎ÷µÄÂí°ï£¬ÁíÒ»¸öÊÇÊÆÁ¦ÔÚ³ÇÄϳǶ«¶¼Óд¥¼°µÄºÍÆø»á¡£
µÚÁù°ÙÈýÊ®ËÄÕ ËÄ´ó°ï»á(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»Õ Ŀ¼ ÏÂÒ»Ò³