GJTJ1:=100*(C-LLV(L,5))/(HHV(C,5)-LLV(L,5));
GJTJ4:=100*(C-LLV(L,30))/(HHV(C,30)-LLV(L,30));
HUANGJIN1:=BARSLAST(CROSS(50,GJTJ1))<3 AND BARSLAST(CROSS(GJTJ1,50))<3;
HUANGJIN2:=BARSLAST(CROSS(GJTJ4,GJTJ1))<2 AND GJTJ1>GJTJ4;
小牛:HUANGJIN1 AND HUANGJIN2;
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