BIAS上穿下降趋势线公式

​AA :=(CLOSE-MA(CLOSE,12))/MA(CLOSE,12)*100;

BB:=(AA-LLV(AA,10))/(HHV(AA,10)-LLV(AA,10))*100;

CC :=MA(AA,3);

DD:REF(BB,1)<=20 and CROSS(AA,CC);