蜻蜓点水选股指标 (源码)

a1:=(LLV(L,6))=(LLV(L,30));
a2:=(C-REF(C,1))/REF(C,1)*100>9.96;
a3:=C>REF(C,1) AND La4:=BARPOS>10;
a1 and a2 and a3 and a4;