RSV:=(CLOSE-LLV(LOW,20))/(HHV(HIGH,20)-LLV(LOW,20))*100; K:SMA(RSV,3,1),colorwhite; D:SMA(K,3,1),coloryellow; 买入:if(cross(k,d) and "cys"<-10 and ref("asr",3)<10,50,0); 20; 50; 80;
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