·µ»Ø
¾ÅÁãºóÌìʦ
Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
Çë¼Ù£¬ÐÝÏ¢Ò»Ìì(1/2)
´æÊéÇ©
Êé¼Ü¹ÜÀí
·µ»ØÄ¿Â¼
½ü¼¸ÈÕ°×Ìì¶¼ÍùÊÐÀïÅܰìÊ£¬Ð¡Ã÷ʵÔÚÓеãÀÛ£¬½ñÌ춯ÓÃÎåÔ·ݵÄÒ»ÌìÇë¼ÙȨ¡£¡£¡£
Çë¼Ù£¬ÐÝÏ¢Ò»Ìì(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»ÕÂ
Ŀ¼
ÏÂÒ»Ò³