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;