RSV1:=(CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100; K日:=SMA(RSV1,3,1); D日:=Sma(K日,3,1); J日:=3*K日-2*D日; 界线:=20; 红箭头:crOSS(J日,界线);