XA_1:=REF(VOL,3)>REF(VOL,4);
XA_2:=VOL<REF(VOL,3) AND REF(VOL,1)<REF(VOL,3) AND REF(VOL,2)<REF(VOL,3);
XA_3:=REF(CLOSE,3)>REF(OPEN,3) AND REF(CLOSE,2)>REF(CLOSE,3) AND REF(CLOSE,1)>REF(CLOSE,2) AND CLOSE>REF(CLOSE,1);
XA_4:=VOL>0;
量价:XA_1 AND XA_2 AND XA_3 AND XA_4;
