牛股启动预警:=(CLOSE-LLV(LOW,18))/(HHV(HIGH,18)-LLV(LOW,18))*100; K:=SMA(牛股启动预警,9,1); D:=SMA(K,3,1); 指标公式:=3*K-2*D; ewww1:=EMA(K,3); ewww2:=DRAWLINE(D =HHV(D,21),D,D =LLV(D,21),D,1); ewww3:CROSS(指标公式,ewww2) AND CROSS(ewww1,ewww2);