三倍爆量三阴买（选股指标）
COND1 := REF(VOL, 2) gt;= 3 * REF(VOL, 3);
COND2 := CLOSE gt; REF(CLOSE, 2) AND CLOSE 0 AND
REF(VOL,2) gt;= 3 * REF(VOL,3) AND
CLOSE gt;REF(CLOSE,2) AND
VOL/CA PITA L*100 gt; 5;