DLWn.双长字DLabbr.基准线(=Datum Line)abbr.静恒载(=Dead Load)abbr.延迟线(=Delay Line )dlscrete-time systems离散系统DL-CarnitineCarnitine康胃素dluplex stainless steel双相不锈钢dlot immunobinding assay免疫斑点法dl-tetrahydropalmatine[化] 延胡索素乙; dl-四氢巴马亭Dl-Tetrahydropalamtine延胡索乙素DLS double layers switch叠层交换DLC digital loop carrier数字环路载波DL-Carnitini Chloridum康胃素, 维生素BT[食欲兴奋药]dlsaster-consclousness灾害意识