VAR1:=(2*CLOSE+HIGH+LOW+OPEN)/5;
VAR2:=EMA(EMA(EMA(VAR1,4),4),4); SJ:=(VAR2-REF(VAR2,1))/REF(VAR2,1)*100; SD:=MA(SJ,2); SK:=MA(SJ,1); VAR3:=crOSS(SK,SD) AND SK<0; 买一: VAR3;