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精選指標：OBV創新高，股價不再創新高。
VA:=IF(CLOSE>REF(CLOSE,1),vol,-VOL);
obv:=SUM(IF(CLOSE=REF(CLOSE,1),0,VA),0);
MaoBV:=MA(OBV,20);
MAOBV=HHV(MAOBV,20) AND MA(C,20)!=HHV(MA(C,20),20);