·µ»Ø
ÔÚŰÁµÊ¢¿ªµÄµØ·½
Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
·É¶êÆË»ð(1/2)
´æÊéÇ©
Êé¼Ü¹ÜÀí
·µ»ØÄ¿Â¼
ÕýÎÄ ·É¶êÆË»ð
×÷ÕßÓл°ÒªËµ£ºÇ×ÃÇ
´Ó½ñÌ쿪ʼ´ËÎĽ«ÔÚÿÌì12µã׼ʱ·¢·Å
Èç¹û²»·¢£¬ÄÇÓÐÒÔÏÂÇé¿ö
Ò»£¬Õý¾µÄ¼ÒÀïÓÐÊÂ
·É¶êÆË»ð(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»ÕÂ
Ŀ¼
ÏÂÒ»Ò³