止跌发射:=REF(C,1)/REF(C,2)<=0.93 ANDBETWEEN(C/REF(C,1),1.03,0.97) ANDCLOSE/REF(CLOSE,8)<=0.8 ANDBETWEEN(REF(C,2)/REF(C,3),1.04,0.96) ANDBETWEEN(REF(C,3)/REF(C,4),1.04,0.96);选股:止跌发射;