短买选股指标 (源码)

RSV:=(CLOSE-LLV(LOW,9))/(HHV(HIGH,3)-LLV(LOW,3))*100;
K:=SMA(RSV,3,1);
D:=SMA(K,3,1);
J:=3*K-2*D;
短买:REF(J,1)<0 AND J>0;