·µ»Ø
Öî½çÖ®ÉîÔ¨¶ñħ
Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
Çë¼Ù(1/2)
´æÊéÇ©
Êé¼Ü¹ÜÀí
·µ»ØÄ¿Â¼
ÏÖÔÚûÔÚ¼Ò£¬¸ã²»Çå³þµ½µ×Äܲ»Äܸü¡ÏȰѼÙÇëÁË¡
Çë¼Ù(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»ÕÂ
Ŀ¼
ÏÂÒ»Ò³