动向速度比率，白线上穿黄线买入参考，
白线拐头向下减仓和卖出参考。
n:=30;
DMZ:=IF((H+L)<=(REF(H,1)+REF(L,1)),0,MAX(ABS(H-REF(H,1)),ABS(L-REF(L,1))));
DMF:=IF((H+L)>=(REF(H,1)+REF(L,1)),0,MAX(ABS(H-REF(H,1)),ABS(L-REF(L,1))));
ADMZ:=MA(DMZ,10);
ADMF:=MA(DMF,10);
SRDM:IF(ADMZ>ADMF,(ADMZ-ADMF)/ADMZ,IF(ADMZ=ADMF,0,(ADMZ-ADMF)/ADMF));
ASRDM:SMA(SRDM,N,1);
