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A11:=3*EMA((C-LLV(L,30))/(HHV(H,30)-LLV(L,30))*100,5)-2*EMA((C-LLV(L,30))/(HHV(H,30)-LLV(L,30))*100,5);
A21:=LLV(L,21);
A31:=LLV(L,30);
A41:=EMA(A11,5);
A51:=(HHV(H,34)-C)/(HHV(H,34)-LLV(L,34))*100;
DIFF := EMA(CLOSE,12) - EMA(CLOSE,26);
DEA :=EMA(DIFF,9);
基础:=DIFF<-0.1 AND DIFF>DEA;
中线买入:CROSS(A11,A41) AND (A51-A41)>40 AND 基础;