RSV:=(CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100;K:=SMA(RSV,9,1);D:=SMA(K,9,1);J:=3*K-2*D;X:=LLV(J,2)=LLV(J,8);短进:CROSS(J,REF(J+0.01,1)) AND X AND J<20;