µÚÆß°ÙÆßÊ®¶þÕ ºÁÎÞ´æÔÚ¸Ð(1/2)
»ÊµÛµãµãÍ·£¬Ò²²»ÓÉ΢ЦÁËÆðÀ´£¬Ö»ÊÇЦ×ÅЦמͽ©×¡ÁË¡£
Ëûת¹ýÍ·À´¿´×Żʺ󣺡¸¸Õ²ÅÊDz»ÊǺγ½ÏÈÉúÒ²ÔÚÕâÀÎÒÃǾ¹È»¶¼ÍüÁË´òÕкô£¿¡¹
»ÊºóÒ²ÊÇһ㶣¬Ëæ¼´¾ÍÍÂÁËÍÂÉàÍ·£º¡¸µÈµ½½áÊøºó¸úÈ˼ҵÀ¸öǸ°É£¬ÎÒÃÇȷʵÊÇʧÀñÁË¡£¡¹
¶ø»Êºó»³ÀïµÄС̫×ÓÒ²ÖÕÓڱﲻסÁË¡£
µÚÆß°ÙÆßÊ®¶þÕ ºÁÎÞ´æÔÚ¸Ð(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ