超买预警:20,POINTDOT; 超卖预警:80,POINTDOT; 
RSV2:=(CLOSE-LLV(LOW,40))/(HHV(HIGH,40)-LLV(LOW,40))*100; 
K周:=SMA(RSV2,15,1),colorwhite; 
D周:=SMA(K周,3,1),coloryellow; 
J周:=3*K周-2*D周,colorred; 
DRAWBAND(J周,RGB(200,0,0),D周,RGB(0,150,150)); 
A1:="KD.K"(9,3,3); 
A2:="KD.D"(9,3,3); 
RSV:=(CLOSE-LLV(LOW,13))/(HHV(HIGH,13)-LLV(LOW,13))*100; 
K:=SMA(RSV,3,1); 
D:=SMA(K,3,1); 
J:=3*K-2*D; 
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