²îµãÍüÁËÒ»¼þºÜÖØÒªµÄÊÂÇé¡£
Ã÷Ì죬dcʹͽÕâ±¾Êé¾ÍÒªÉϼÜÁË£¬ËùÒÔ½ñÌìµÄÕâÁ½Õ¾ÍÊÇ×îºóµÄÃâ·ÑÕ½ÚÁË¡£
¶ÔÓÚÈκÎÒ»±¾ÍøÎÄÀ´Ëµ£¬Ö»Òª²»tj£¬ÉϼÜÊǿ϶¨µÄÊÂÇ飬ֻÊÇʱ¼äÔçÍí¶øÒÑ¡£
´ÓÔªµ©·¢Êéµ½ÏÖÔÚ£¬Ò²¿ìÁ½¸öÔÂÁË¡£ÔÚÕâÆÚ¼ä£¬Õâ±¾Êé´ÓûÓжϸü»òÊÇÇë¼Ù¹ý¡£³ýÁËǰ¼¸ÌìÒòΪµçÄÔ»µÁË£¬µ¼ÖÂÓÐÁ½ÌìÖ»ÓÐÒ»¸üÖ®Í⣬ÆäËûʱ¼ä×îÉÙ¶¼ÓÐÁ½¸ü¡£
¸üÐÂËäÈ»²»ÊǺܶ࣬µ«ÊÇÈ´ÌØ±ðÎȶ¨¿É¿¿£¬¾Í¸úѧͽÕâ¸öÈËÒ»Ñù¡£
Õâ±¾ÊéÒѾÊÇѧͽµÄµÚ¶þ±¾ÁË£¬ÉÏÒ»±¾µÄ³É¼¨¸ü²î£¬ÉϼܵÄʱºòÖ»ÓÐ1600¸öÊղأ¬µ«¼´Ê¹Èç´Ë£¬Ñ§Í½ÒÀ¾ÉûÓÐtj£¬¼á³Öµ½ÁËÍê±¾£¬¾ÍÊÇ×ÖÊýÓеãÉÙ¡£
ÉϼܸÐÑÔ(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ