·µ»Ø
Ñø³É·´ÅÉÅ®Ö÷ºó£¬ËýÃÇ×·À´ÁË
Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
Çë¸ö¼Ù(1/2)
´æÊéÇ©
Êé¼Ü¹ÜÀí
·µ»ØÄ¿Â¼
Çë¸ö¼Ù
Çë¸ö¼Ù
×î½ü¾çÇéÏÝÈëÎÒ×î²»Éó¤µÄÁìÓòÁË£¬ÎÒÒ»ÏòÊÇдÄÐÅ®Ö÷¸ÐÇéÏ·Éó¤Ò»µã£¬µ«ÊÇÒ»±¾Êé²»¿ÉÄÜֻдÕâ¸ö£¬ËùÒÔÐèҪʱ¼äºÃºÃÊáÀíһϡ£
Çë¸ö¼Ù(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»ÕÂ
Ŀ¼
ÏÂÒ»Ò³