{上升通道}
UPPER:=HHV(H,20);
LOWER:=LLV(L,20);
MID:=(UPPER+LOWER)/2;
UPPERLINE:REF(UPPER,1);
LOWERLINE:REF(LOWER,1);
MIDLINE:REF(MID,1);
{下降通道}
UPPER2:=LLV(H,20);
LOWER2:=HHV(L,20);
MID2:=(UPPER2+LOWER2)/2;
UPPERLINE2:REF(UPPER2,1);
LOWERLINE2:REF(LOWER2,1);
MIDLINE2:REF(MID2,1);
