·µ»Ø

ÆäʵÄãÔÙÒ²²»»á»ØÀ´ÁË

Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
ÎÒÃÇÏà°®¹ý£¬Ä㻹¼ÇµÃÂð£¿(1/2)
   ´æÊéÇ© Êé¼Ü¹ÜÀí ·µ»ØÄ¿Â¼
ÎÒÖªµÀ´Ë¿ÌÎһص½ºèÁÁÉí±ß¶ÔËûÊÇÒ»ÖÖÎêÈ裬ÒòΪÎÒµÄÉíÌåÒѾ­ÂýÂýÍË»¯£¬ÎҺܿì¾ÍÒªËÀÁË¡£
ÎÒÃÇÏà°®¹ý£¬Ä㻹¼ÇµÃÂð£¿(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»Õ Ŀ¼ ÏÂÒ»Ò³