| --  作者:FireScript --  发布时间:2017/12/4 14:30:24
 --
 
 ma60:ma(c,60);ma20:ma(c,20);
 buycond:cross(ma20,ma60)sellcond:cross(ma60,ma20);
 if buycond then begin
 sellshort(holding<0,holding,MARKET);
 buy(holding=0,1,market);
 end
 if sellcond then begin
 sell(holding>0,holding,MARKET);
 buyshort(holding=0,1,market);
 end
 
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