2055550.4TRundercutMAXundercutTRFIAundercutTR4DRSDRSDRS0.42F1F2F1F1F12021F1P232.225TRPlanCPlanCundercut5343.6ERS50%1637F238TRNopowerWhathappened?tTRbuff66~F1hbuffF212PP（）