注意红线与黄线整体趋势，开始走平，在结合其它指标买入，波段操作，

A:=(3*C+L+O+H)/6;
 X:(20*A+19*REF(A,1)+18*REF(A,2)+17*REF(A,3)+16*REF(A,4)+15*REF(A,5)+
 14*REF(A,6)+13*REF(A,7)+12*REF(A,8)+11*REF(A,9)+10*REF(A,10)+9*REF(A,11)+8*REF(A,12)
 +7*REF(A,13)+6*REF(A,14)+5*REF(A,15)+4*REF(A,16)+3*REF(A,17)+2*REF(A,18)+
 REF(A,20))/210,colormagenta,LINETHICK2,POINTDOT;
 Y:MA(X,15),colorwhite,LINETHICK2,POINTDOT;
 VAR4:=(2*CLOSE+HIGH+LOW)/4;
成本区:EMA(VAR4,90)*0.995,colorgreen,CIRCLEDOT;
操作区:EMA(VAR4,142)*0.998,colorred,LINETHICK2;
铁底区:EMA(VAR4,250)*0.885,coloryellow,LINETHICK2;