·µ»Ø

½úÉÏÇä

Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
Çë¼ÙÒ»Ìì(1/2)
   ´æÊéÇ© Êé¼Ü¹ÜÀí ·µ»ØÄ¿Â¼
½ñÌìÓÐÒ»¸öºÍÎÒ¿ªñÉ¿ãÒ»Æð³¤´óµÄ·¢Ð¡¹ýÀ´ÕÒÎÒ£¬È»ºóºÈ×íÁË£¬ÏÖÔÚÓеçÕÒ²»×ű±ÁË¡£Ã÷ÌìËĸü²¹ÉÏ¡£
Çë¼ÙÒ»Ìì(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»Õ Ŀ¼ ÏÂÒ»Ò³