·µ»Ø
È˼äÔÓ̸
Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
³¤à®(1/2)
´æÊéÇ©
Êé¼Ü¹ÜÀí
·µ»ØÄ¿Â¼
ÎÒºöÈ»Òâʶµ½£¬ÕâÊÀ½çÉÏÔÚºõÎÒµÄÈ˺ÜÉÙ¡£ÎÒŪ¶ªÁËÁ½Î»¡£
»¹ÊǺúÃѧϰ°É¡£
³¤à®(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»ÕÂ
Ŀ¼
ÏÂÒ»Ò³