通达信k线:=(CLOSE-LLV(LOW,21))/(HHV(HIGH,21)-LLV(LOW,21))*100; K:=SMA(通达信k线,7,1); D:=SMA(K,3,1); J:=3*K-2*D; 指标公式源码:CROSS(J,7.6),LINETHICK3;