·µ»Ø
Ì춨Á¼Ôµ
Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
Çë¼Ù(1/2)
´æÊéÇ©
Êé¼Ü¹ÜÀí
·µ»ØÄ¿Â¼
¶Ô²»ÆðÇ×ÃÇ£¬ÕâÖܹ¤×÷Á¿Ì«´ó£¬°¢ÈáÓ¦¸¶²»¹ýÀ´£¬×òÌì¶Ï¸ü£¬À´ÒÔΪ½ñÌì¿ÉÒÔ²¹ÉÏ£¬¿´À´²»ÐУ¬¹¤×÷×öÍêÁ˵«ÊǺÜÀÛ£¬½ñÌì±ØÐëÒªÐÝϢһϣ¬Ã÷Ì죬һ¶¨¸üÐÂ
Çë¼Ù(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»ÕÂ
Ŀ¼
ÏÂÒ»Ò³