ma5:=ma(c,5);ma10:=ma(c,10);mv5:=ma(v,5);mv30:=ma(v,30);dif:=ema(close,12)-ema(close,26);dea:=ema(dif,9);va:=if(close>ref(close,1),vol,-vol);obv:=sum(if(close=ref(close,1),0,va),0);maobv:=ma(obv,30);选股:ma5>ma10 and mv5>mv30 and dif>dea and obv>maobv 20210311