·µ»Ø

¸½Ä§´óʦ

Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
µÚÒ»ÎåÒ»Õ ÆÙ²¼ÏµĶ´¿Ú(1/2)
   ´æÊéÇ© Êé¼Ü¹ÜÀí ·µ»ØÄ¿Â¼
ÄúµÄÖ§³Ö£¬¾ÍÊÇÎÒ×î´óµÄ¶¯Á¦¡£)
µÚÒ»ÎåÒ»Õ ÆÙ²¼ÏµĶ´¿Ú(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»Õ Ŀ¼ ÏÂÒ»Ò³