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0/4G/500G/512M独显/DVDRW电脑_联想_台式机_THINKCENTRE_ThinkCentre M6100t(Q9500/4G/500G/512...

使上内光企与下内光企相等,以简化生产工艺,即： H1-83=H2-17 （1）已知: H1=H-H2 （2）将（2）式...