DLabbr.基准线(=Datum Line)abbr.静恒载(=Dead Load)abbr.延迟线(=Delay Line )DLUR AND DLUS相关LU请求者和服务者DLC thin film类金刚石薄膜dlete command删除命令dlexer filter低通滤波器DL-cysteine巯基丙氨酸, DL-半胱氨酸dlectric loss电损耗dl- borneol龙脑dl-methione消旋甲硫氨酸, 消旋蛋胺酸dl-copmound[化] 外消施化合物dl-Anabasin八角枫碱