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趨勢線: 3*SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1)-2*SMA(SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1),3,1);
見底信號: 10;
買點準備: IF(趨勢線<=10,50,0);
買入時間: IF(CROSS(趨勢線,見底信號),100,0);