MA20:=MA(CLOSE,20);
BTMA20:= (CLOSE MA20) AND (REF(CLOSE,1) REF(MA20,1)) AND (REF(CLOSE,2) REF(MA20,2));
vol120:=MA(VOL,120);
BTVOL120:= (VOL VOL120) AND (REF(VOL,1) REF(VOL120,1)) AND (REF(VOL,2) REF(VOL120,2));
中线强势: BTMA20 AND BTVOL120;