顶底波段王之笑脸选股指标公式

RSV:= (CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100;
FASTK:=SMA(RSV,3,1);
K:=SMA(FASTK,3,1);
D:=SMA(K,5,1);
笑脸:crOSS(K,D) AND K<=20;