:=(CLOSE-MA(C,20))/MA(C,20)*100;DIF:=EMA(CLOSE,12)-EMA(CLOSE,26);B:=EMA(DIF,9);A1:=OSS(BIAS,-20/2);A2:=B>REF(B,1);{(买开)} ENTERLONG:REF(A1,1) AND REF(A2,1) AND A2;{多头(卖平)} EXITLONG:CROSS(20/2,BIAS) OR CROSS(20,BIAS) ;