买买:=EMA(((100 * (CLOSE - LLV(LOW,34))) / (HHV(HIGH,34) - LLV(LOW,34))),3);:=EMA(((100 * (INDEXC - LLV(INDEXL,34))) / (HHV(INDEXH,34) - LLV(INDEXL,34))),3);B:=(OSS(买买,大盘) AND (买买 >= 45));决战:B > 0;