三金叉通达信公式，吃个小波段那还是很轻松的

NDAY_2:= 3;

DOWN := CLOSE/LLV(LOW,60)<=1.2;

PMA1 := MA(CLOSE,3);

PMA2 := MA(CLOSE,5);

VMA1 := MA(VOL,3);

VMA2 := MA(VOL,5);

DIFF := EMA(CLOSE,12) - EMA(CLOSE,26);

DEA  := EMA(DIFF,9);

PPDAY := BARSLAST(CROSS(PMA1,PMA2));

VVDAY := BARSLAST(CROSS(VMA1,VMA2));

MACDDAY := BARSLAST(CROSS(DIFF,DEA));

SJCJD:= IF((PPDAY<=NDAY_2 AND VVDAY<=NDAY_2 AND MACDDAY<=NDAY_2),1,0);

三金叉:SJCJD;