·µ»Ø

ÖîÌì´óµÀ×Ú

Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
Çë¼ÙÌõÒ»ÕÅ(1/2)
   ´æÊéÇ© Êé¼Ü¹ÜÀí ·µ»ØÄ¿Â¼
ÓÐÅó×ÔÔ¶·½À´£¬²»µÃ²»Çë¼ÙÁË£¬±§Ç¸¸÷λ´óÀС£
Çë¼ÙÌõÒ»ÕÅ(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»Õ Ŀ¼ ÏÂÒ»Ò³