ˢ˵
1.ģʽ 2.2-6ţϵˢP  




ˢP=׼ʼ+P+ ˢСG=׼ʼ+G+


ôŵһöľ   ŵˢP СŹѡˢG 


СŲҪֻˢ   ֻ׼ʼ    ӹһȶ




ˢ  ԾQ  ܶͿӰ ֤Բȶ


ĿǰԹһˢ 2Сʱһ    ڽõĲķ