SKDJ金叉在20以下

LOWV:=LLV(LOW,9);
HIGHV:=HHV(HIGH,9);
RSV:=EMA((CLOSE-LOWV)/(HIGHV-LOWV)*100,9);
K:=EMA(RSV,3);
D:=MA(K,3);
CROSS(K,D) AND D<20;