历史最低价 := C = LLV(C, BARSLAST( DATE 0.3;DIF := EMA(C, 12) - EMA(C, 26);DEA := EMA(DIF, 9);MACD金叉 := C ROSS (DIF, DEA) AND DIF gt; 0;综合选股: 历史最低价 AND 每股收益 AND MACD金叉;