布林线开口开始扩大选股

N:=7;
M:=6;
MID:=MA(CLOSE,20);
UPPER:=MID+2*STD(CLOSE,20);
LOWER:=MID-2*STD(CLOSE,20);
AA:=(UPPER-REF(UPPER,1))*1000/REF(UPPER,1);
CROSS(H,UPPER) AND AA>M AND DYNAINFO(17)>0 AND EVERY(REF(UPPER,1)>REF(H,1),N);

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