D1:=(CLOSE+HIGH+LOW)/3; D2:=LLV(LOW,34); D3:=HHV(HIGH,13); A1:=EMA((D1-D2)/(D3-D2)*100,9); A2:=EMA((REF(A1,1)+A1)/2,3); 抄底:CROSS(A1,A2)AND A1<20;