DD1:=EMA(C,3)-EMA(C,8);
DD2:=EMA(O,3)-EMA(O,8);
AA1:=PLOYLINE(CROSS(DD1,DD2),DD2);
AAB1:=PLOYLINE(CROSS(DD2,DD1),DD1);
地狱:=COUNT(CROSS(DD1,DD2),AA1<REF(AA1,3) AND AAB1>REF(AAB1,3));
选股:FILTERX(地狱,30);
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