¸Ðл´ó¼Òһ·ÒÔÀ´µÄÖ§³Ö£¬¸Ðл¸÷λ¶ÁÕßµÄÅã°é£¬ÄãÃÇÊÇ×÷Õß¼á³ÖÏÂÈ¥µÄ¶¯Á¦¡£
±¾ÊéÔ¤¼ÆÁ½°ÙÍò×ÖÍê±¾£¬Ã¿ÌìÁ½¸ü£¬Ã¿¸üÁ½Ç§¶à×Ö£¬×÷Õß¿´´ó¼ÒͶƱ¡¢´òÉÍÇé¿ö£¬²»¶¨ÆÚ¼Ó¸ü¡£
´æ¸å²»¶à£¬²»¸Ò³Ðŵ̫¶à¡£¼æÖ°Ð´Ê飬ÿÌìÏ塈ȯ¼Ò×ö·¹¡¢Ð´Ê顣ÿÍí°Ëµãдµ½Ê®¶þµã£¬·Ç³£ÏûºÄ¾«Á¦¡£
ÉϼܸÐÑÔ(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ