拉力A:=SMA(拉力,6.3,1);
波峰波谷:=SMA(拉力A,31);
拉力B:=3*拉力A-2.1*波峰波谷;
空方:=3*峰谷-1*拉力A;
短:=IF(空側>拉力b,拉力b,空側);
加號:short > =REF (short,1)和REF (short,1)& lt;REF (short,2);