线:=ema(c,3);下降线:=ema(c,5);中间线:=ema(下降线,5);Var1:=(HIGH+LOW+OPEN+2*CLOSE)/5;Var2:=REF(Var1,1);Var3:=SMA((close-Var2),6,1)/SMA(A(close-Var2),6,1)*100;红箭头:OSS(上升线,下降线)and 中间线>=ref(中间线,1)and Var3<50;