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麻烦帮我看下,下面的表达问题出在哪里?
ma3020:=stkindi(\'\',\'ma.ma2(20,0,3000,1)\',0,4,-1);
ma3060:=stkindi(\'\',\'ma.ma3(60,0,3000,1)\',0,4,-1);
ma30120:=stkindi(\'\',\'ma.ma4(120,0,3000,1)\',0,4,-1);
ma30250:=stkindi(\'\',\'ma.ma5(250,0,3000,1)\',0,4,-1);
30上均:=max(ma3020,max(ma3060,max(ma30120,ma30250)));
30下均:=min(ma3020,min(ma3060,min(ma30120,ma30250)));