VAR2:=LLV(低,21);
VAR3:=HHV(高,21);
SK:= EMA((var 1-var 2)/(var 3-var 2)* 100,5);
SD: =EMA(0.667*REF(SK,1)+0.333*SK,4);
VAR4:=IF(CROSS(SD,SK)AND SK & gt;=60,60,76);
VAR5:=IF(CROSS(SK,20)或CROSS(SK,SD)AND SK & gt;20,20,5);
買:VAR5