DLWn.双长字DLabbr.基准线(=Datum Line)abbr.静恒载(=Dead Load)abbr.延迟线(=Delay Line )dl-Anabasine八角枫碱, 消旋毒藜碱[肌松药]dl-narcotine格诺莨菪品, 消旋那可汀dl-laudanine劳丹碱dlastic finish弹性(精)加工DL-histidineα-氨基-5-异吡唑丙酸, DL-组氨酸dl-tenulpine瑞潘定宁Dlind - zone盲区Dlsused railway废弃铁路线DL-malic acid羟基琥珀酸, DL-苯果酸DL-S coupling[化] 罗素-桑德斯耦合